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Your kidney function report shows two numbers — creatinine and eGFR. Both relate to kidney health. However, they are not the same measurement, and confusing them can lead to misunderstanding your actual kidney status. Understanding eGFR vs creatinine clearly helps you interpret your report accurately. Moreover, knowing the difference helps you ask your doctor the right questions about your kidney health. This guide explains exactly what each test measures, how they relate to each other, and what your specific results mean for your kidneys. eGFR vs Creatinine — The Core Difference Creatinine is a waste product. eGFR is a calculated estimate of kidney filtration rate. This is the fundamental difference between eGFR and creatinine that most patients never fully understand. What Creatinine Actually Measures Creatinine is produced by normal muscle activity. Healthy kidneys filter it from the blood continuously. Moreover, when kidney function declines, creatinine accumulates in the bloodstream — producing a higher reading on your blood report. However, creatinine alone has a significant limitation. Muscle mass varies enormously between individuals. Consequently, a muscular young man and a frail elderly woman with identical kidney function will show different creatinine levels — simply due to their different muscle mass. What eGFR Actually Measures eGFR stands for estimated Glomerular Filtration Rate. It calculates how many millilitres of blood your kidneys filter per minute. Furthermore, this calculation factors in your creatinine level alongside your age, sex, and sometimes race. Consequently, eGFR corrects for the muscle mass limitation that affects creatinine alone. This makes eGFR a more accurate and clinically useful measure of actual kidney function for most patients. How Doctors Calculate eGFR From Creatinine Doctors do not measure eGFR directly. Instead, they calculate it using a mathematical formula. The most widely used formula today is called CKD-EPI. The CKD-EPI Formula Explained Simply The CKD-EPI formula takes your serum creatinine result and adjusts it based on your age and sex. Moreover, younger patients with the same creatinine level typically show a higher eGFR than older patients — because kidney filtration naturally declines somewhat with age. Furthermore, this is why your lab report always includes your age when calculating eGFR. Without this adjustment, two patients with identical creatinine but different ages would receive an inaccurate, identical kidney function assessment. Comparing eGFR vs Creatinine — Normal Ranges Test Normal Range What It Tells You Creatinine (men) 0.74 – 1.35 mg/dL Raw waste product level in blood Creatinine (women) 0.59 – 1.04 mg/dL Raw waste product level in blood eGFR Above 90 mL/min/1.73m² Calculated kidney filtration rate Important: Creatinine values are interpreted directly against the reference range. However, eGFR is interpreted against specific kidney disease stages — making it the more clinically actionable number for tracking kidney health over time. eGFR Stages — What Your Number Means eGFR Value Kidney Function Stage What This Means 90 or above Normal Healthy kidney function 60 – 89 Stage 2 — Mildly reduced Often no symptoms, monitor regularly 45 – 59 Stage 3a — Mild to moderate Requires lifestyle and medical attention 30 – 44 Stage 3b — Moderate to severe Active management needed 15 – 29 Stage 4 — Severe Specialist nephrology care required Below 15 Stage 5 — Kidney failure Dialysis or transplant evaluation needed Why eGFR Staging Matters More Than a Single Creatinine Number A creatinine of 1.5 mg/dL means something different for a young, muscular man than for an elderly, frail woman. Furthermore, the eGFR calculation accounts for this difference — translating both results into the same standardised staging system. Consequently, doctors track eGFR over time to monitor kidney disease progression — because it provides a consistent, comparable measure regardless of changes in muscle mass, age, or other individual factors. When Creatinine and eGFR Disagree Occasionally, creatinine appears normal while eGFR suggests reduced kidney function — or vice versa. Understanding why this happens helps clarify confusing reports. Why a “Normal” Creatinine Can Still Mean Reduced eGFR This commonly occurs in elderly patients. Moreover, muscle mass naturally declines with age — producing lower creatinine even when actual kidney filtration has decreased significantly. Consequently, an elderly patient with a “normal” creatinine of 1.0 mg/dL may still have a reduced eGFR of 55 — indicating Stage 3 kidney disease that creatinine alone would have missed entirely. Why High Creatinine Does Not Always Mean Low eGFR Highly muscular individuals — including athletes and bodybuilders — naturally produce more creatinine from muscle breakdown. Furthermore, this can produce a mildly elevated creatinine reading despite genuinely normal kidney function. In these cases, eGFR calculations sometimes underestimate true kidney function — because the formula assumes average muscle mass. This is precisely why doctors interpret creatinine and eGFR together, alongside clinical context — rather than relying on either number in complete isolation. Other Tests That Complete the Kidney Picture Creatinine and eGFR provide essential information. However, a complete kidney assessment includes additional tests for full clarity. Blood Urea Nitrogen (BUN) BUN measures another waste product filtered by the kidneys. Moreover, the BUN-to-creatinine ratio helps doctors distinguish between dehydration-related creatinine elevation and genuine kidney disease. Urine Microalbumin This test detects protein leaking into urine — often the earliest detectable sign of kidney damage. Furthermore, urine microalbumin can become abnormal years before either creatinine or eGFR show any change — making it particularly valuable for diabetic patients. Cystatin C Cystatin C is an alternative marker to creatinine for calculating eGFR. Moreover, it is not affected by muscle mass — making it particularly useful in patients where creatinine-based eGFR may be inaccurate, such as bodybuilders or severely malnourished patients. Who Should Get eGFR and Creatinine Tested Regularly? Routine kidney function testing is particularly important for certain groups. Get tested annually if you: Furthermore, anyone experiencing unexplained fatigue, swelling, or changes in urination should request kidney function testing — even without these specific risk factors. How to Prepare for Creatinine and eGFR Testing Preparation for this test is straightforward. Fasting is generally not required for creatinine or eGFR specifically. However, your doctor may request fasting if ordering it

You receive your blood report and notice your creatinine is flagged as high. Your first question is predictable — what does a high creatinine level mean for your health? A high creatinine level is one of the most important warning signals in a kidney function test. Moreover, understanding what it means, what causes it, and what to do next can protect your kidney health before serious damage develops. This guide explains everything clearly — what creatinine is, what a high creatinine level means, what causes it, what symptoms accompany it, and which kidney tests your doctor will recommend. What Is Creatinine? Creatinine is a waste product produced by normal muscle activity. Every time your muscles use energy, they break down a compound called creatine phosphate — releasing creatinine as a byproduct. Healthy kidneys filter creatinine from the bloodstream continuously and excrete it through urine. Consequently, creatinine levels in the blood remain stable when kidneys function normally. Furthermore, when kidney function declines, creatinine accumulates — producing elevated blood levels that doctors use as a direct indicator of kidney health. Why Creatinine Is the Primary Kidney Marker Creatinine is produced at a relatively constant rate by muscle tissue. Moreover, it is filtered almost exclusively by the kidneys. These two properties make it an ideal marker — rising levels reliably indicate declining kidney filtration rather than simply reflecting dietary or metabolic variation. What Is the Normal Creatinine Range? Group Normal Serum Creatinine Range Adult men 0.74 – 1.35 mg/dL Adult women 0.59 – 1.04 mg/dL Children 0.20 – 1.00 mg/dL (varies by age) Elderly adults Slightly lower due to reduced muscle mass Important: Normal ranges vary slightly between laboratories. Moreover, muscle mass significantly affects creatinine levels — highly muscular individuals naturally have higher creatinine than those with less muscle. Consequently, doctors always interpret creatinine results in the context of the patient’s age, sex, body composition, and clinical picture. What Does a High Creatinine Level Mean? A high creatinine level means the kidneys are not filtering waste from the blood as efficiently as they should. The degree of elevation provides important information about the severity of the problem. Creatinine Level What It Indicates Slightly above normal Mildly reduced kidney function — requires investigation 1.5 to 3.0 mg/dL Moderately reduced kidney function 3.0 to 6.0 mg/dL Severely reduced kidney function Above 6.0 mg/dL Very severe — dialysis may be needed However, a single elevated reading does not always confirm chronic kidney disease. Temporary creatinine elevation occurs in dehydration, intense exercise, and certain medications. Furthermore, the trend over time — whether creatinine is stable, rising slowly, or rising rapidly — matters as much as any single reading. What a High Creatinine Level Means Versus What It Does Not A high creatinine level means kidney filtration is impaired. It does not automatically mean permanent kidney disease. Moreover, identifying and treating the underlying cause promptly — particularly in acute cases — often restores creatinine to normal completely. Consequently, prompt medical evaluation is always more important than drawing conclusions from a number alone. 8 Common Causes of High Creatinine 1. Chronic Kidney Disease (CKD) Chronic Kidney Disease is the most common cause of persistently elevated creatinine in India. CKD develops when the kidneys sustain progressive damage over months or years — from diabetes, high blood pressure, recurrent infections, or other conditions. Moreover, CKD progresses through five stages. Furthermore, creatinine rises progressively as kidney function declines through each stage — making it the primary marker doctors use to track CKD progression. Consequently, any persistently elevated creatinine warrants investigation for underlying CKD — regardless of how mild the initial elevation appears. How CKD Elevates Creatinine Healthy kidneys contain approximately one million filtering units called nephrons. CKD destroys nephrons progressively. Moreover, surviving nephrons compensate by working harder — maintaining near-normal creatinine until significant nephron loss has already occurred. Consequently, even a mild creatinine elevation can indicate substantial underlying kidney damage. 2. Acute Kidney Injury (AKI) Acute Kidney Injury is a sudden and rapid decline in kidney function — producing a sharp creatinine rise over hours or days. Unlike CKD, AKI is often reversible when identified and treated promptly. Common causes of AKI in India include severe dehydration, sepsis, certain medications — particularly NSAIDs and contrast dyes used in imaging — and obstructions to urine flow. Furthermore, AKI can occur suddenly even in people with previously normal kidney function. Consequently, a rapidly rising creatinine in someone recently ill or hospitalised requires urgent investigation. 3. Diabetes and Diabetic Nephropathy Diabetes is the single leading cause of kidney disease globally — and in India, where over 77 million people live with diabetes, this is a critical public health issue. Persistently high blood sugar damages the tiny blood vessels filtering the kidneys — a condition called diabetic nephropathy. Moreover, diabetic nephropathy develops silently for years before creatinine rises significantly. Furthermore, early damage shows up in urine albumin tests long before creatinine elevation occurs. Consequently, diabetic patients should monitor both creatinine and urine microalbumin regularly — not creatinine alone. 4. High Blood Pressure Uncontrolled hypertension damages kidney blood vessels progressively. Moreover, the kidneys themselves regulate blood pressure — creating a damaging cycle in which kidney disease worsens hypertension, which then accelerates kidney damage further. Furthermore, hypertensive kidney disease rarely produces symptoms until creatinine rises significantly. Consequently, anyone with long-standing or poorly controlled blood pressure should monitor kidney function regularly — even in the complete absence of urinary symptoms. 5. Dehydration Severe dehydration reduces blood volume — causing the kidneys to receive less blood flow than they need to filter efficiently. Creatinine then accumulates temporarily until fluid balance restores. Moreover, dehydration-related creatinine elevation is the most common cause of a falsely elevated result in otherwise healthy young Indians. Consequently, doctors always consider hydration status when interpreting a mildly elevated creatinine — and may recommend repeat testing after adequate hydration before proceeding to further investigation. 6. Certain Medications Several commonly used medications elevate creatinine — either by reducing kidney blood flow or by directly damaging kidney tissue: Furthermore,

Blood tests can detect cancer — but not in the way most people expect. A single blood test cannot definitively diagnose cancer on its own. However, specific blood tests identify markers that strongly indicate cancer’s presence, track its progression, and monitor treatment response. Understanding which blood tests detect cancer markers, what their results mean, and what their limitations are helps you make informed decisions about your health. Moreover, knowing when to request these tests could save your life — because cancer caught early is almost always more treatable. This guide covers every important cancer-related blood test, what each one detects, and when to get tested at Prakash Pathology, Varanasi. How Blood Tests Detect Cancer — The Science Behind It Cancer cells behave differently from normal cells. They divide uncontrollably, consume resources aggressively, and release specific proteins, enzymes, and genetic fragments into the bloodstream. Moreover, cancer disrupts normal organ function — producing measurable changes in routine blood parameters. Blood tests detect cancer through two primary mechanisms. First, tumour marker tests identify specific proteins that cancer cells produce in elevated quantities. Second, routine blood tests — like the CBC and LFT — detect abnormal patterns that indicate cancer’s indirect effects on the body. Why No Single Test Confirms Cancer Alone A positive tumour marker does not automatically confirm cancer. Moreover, some non-cancerous conditions also elevate tumour markers. Consequently, doctors always combine blood test results with imaging, biopsy, and clinical examination before reaching a cancer diagnosis. Furthermore, a normal tumour marker result does not completely rule out cancer — because not all cancers elevate every marker consistently. This is why understanding both the power and the limitations of these tests is essential. Blood Tests That Help Detect Cancer 1. Complete Blood Count (CBC) — The First Indicator The CBC is the most commonly ordered blood test in medicine. It measures red blood cells, white blood cells, and platelets. Moreover, several patterns in a CBC reading strongly suggest certain cancers — even before any specific tumour marker test is ordered. What the CBC reveals about cancer: When CBC Results Prompt Further Testing A single abnormal CBC does not diagnose cancer. However, persistently abnormal results — particularly a rising WBC count without infection, or a falling platelet count without obvious cause — always prompt a peripheral blood smear and specialist referral. Furthermore, catching these patterns early through routine annual CBC testing is one of the most accessible forms of cancer screening available. 2. Tumour Markers — Specific Cancer Indicators Tumour markers are proteins, hormones, or other substances that cancer cells produce in elevated quantities. Blood tests detect cancer through tumour markers most specifically — making these the most targeted cancer screening tools available. Tumour Marker Cancer It Indicates Normal Range PSA (Prostate Specific Antigen) Prostate cancer Below 4 ng/mL CA 125 Ovarian cancer Below 35 U/mL CA 19-9 Pancreatic, bile duct cancer Below 37 U/mL CA 15-3 Breast cancer Below 30 U/mL CEA (Carcinoembryonic Antigen) Colorectal, lung, breast cancer Below 2.5 ng/mL (non-smokers) AFP (Alpha-Fetoprotein) Liver cancer, testicular cancer Below 10 ng/mL Beta-HCG Testicular cancer, choriocarcinoma Below 5 mIU/mL LDH (Lactate Dehydrogenase) Lymphoma, leukaemia, testicular cancer 140 – 280 U/L How to Interpret Tumour Marker Results Elevated tumour markers are significant — but not conclusive alone. Moreover, the degree of elevation matters considerably. A mildly elevated PSA may indicate prostate enlargement rather than cancer. However, a dramatically elevated AFP strongly suggests liver cancer and warrants urgent investigation. Furthermore, tumour markers are most valuable when tracked over time. A rising marker trend is often more informative than a single high reading. Consequently, doctors order repeat tests at intervals to assess whether levels are stable, falling, or rising progressively. 3. Liver Function Test (LFT) — Detecting Liver Cancer Signals The liver is one of the most common sites of both primary cancer and metastatic spread from other cancers. An LFT measures several liver enzymes and proteins. Moreover, specific abnormal patterns in LFT results raise strong suspicion of liver involvement. LFT patterns that suggest cancer: Additionally, doctors always order an AFP test alongside an LFT when liver cancer is suspected — because elevated AFP combined with abnormal LFT findings significantly strengthens the diagnostic picture. 4. PSA Test — Prostate Cancer Screening The PSA test is the most widely used cancer screening blood test for men above 50. Prostate cells — both normal and cancerous — produce PSA. However, prostate cancer cells produce it in far greater quantities. Understanding PSA results: Moreover, the PSA test is not perfect. Some prostate cancers do not elevate PSA significantly. Consequently, doctors combine PSA results with digital rectal examination and imaging before confirming any diagnosis. 5. CA 125 — Ovarian Cancer Screening CA 125 is a protein produced by ovarian cancer cells. It is the primary blood marker for ovarian cancer monitoring. Moreover, it is particularly useful for tracking treatment response in women already diagnosed with ovarian cancer. Important limitations of CA 125: CA 125 is not a perfect screening tool for women without symptoms. Several non-cancerous conditions — including endometriosis, fibroids, pelvic inflammatory disease, and even pregnancy — elevate CA 125 levels. Consequently, an elevated CA 125 in a woman with pelvic pain or bloating prompts further imaging — it does not confirm cancer alone. However, a significantly elevated CA 125 — particularly above 200 U/mL — in a postmenopausal woman with pelvic symptoms warrants urgent specialist evaluation without delay. 6. CEA — Colorectal Cancer Monitoring CEA — Carcinoembryonic Antigen — is a protein elevated in several cancers, particularly colorectal cancer. Moreover, CEA is most valuable for monitoring colorectal cancer after treatment — tracking whether cancer has recurred following surgery or chemotherapy. What elevated CEA suggests: A CEA above 5 ng/mL in a non-smoker with digestive symptoms — particularly changes in bowel habits, blood in stool, or unexplained weight loss — warrants a colonoscopy without delay. Furthermore, a rising CEA trend in a patient previously treated for colorectal cancer almost always indicates recurrence — prompting immediate imaging and specialist review. 7.

You have a blood test tomorrow morning. Should you eat breakfast or skip it? This is one of the most common questions patients ask before visiting a diagnostic centre. Understanding fasting vs non-fasting blood tests is important. Getting this wrong can significantly affect your results. Moreover, incorrect preparation can force you to repeat the test entirely — wasting both time and money. This guide explains which tests require fasting, which do not, and exactly how to prepare for both — so you arrive at Prakash Pathology ready for an accurate result the first time. What Does Fasting Mean Before a Blood Test? Fasting means consuming no food or calorie-containing drinks for a specific period before your test. Typically, doctors require 8 to 12 hours of fasting for most standard blood panels. What You Can and Cannot Have While Fasting During a fasting period, plain water is always acceptable — and actually encouraged. However, the following must be avoided completely: Furthermore, smoking before a fasting blood test also affects certain results. Avoid it during the fasting window wherever possible. Why Fasting Matters for Specific Tests When you eat, your digestive system releases glucose, fats, and other substances directly into the bloodstream. Consequently, these substances artificially elevate certain test values. Fasting removes this variable — giving your doctor a clean, comparable baseline reading. Blood Tests That Require Fasting Fasting Blood Sugar (FBS) This test measures your baseline blood glucose level. Eating beforehand raises glucose artificially. Therefore, an 8-hour fast is mandatory for an accurate diabetes or prediabetes screening result. A fasting period shorter than 8 hours will produce a falsely elevated reading. This can lead to an incorrect diagnosis or unnecessary repeat testing. Lipid Profile (Cholesterol Test) A lipid profile measures total cholesterol, LDL, HDL, and triglycerides. Triglycerides are particularly sensitive to recent food intake. Even a single meal can raise triglyceride levels significantly. Consequently, most doctors require a 10 to 12 hour fast before a lipid profile. This ensures the reading reflects your true baseline — not a temporary dietary spike. Iron Studies — Serum Iron and TIBC Serum iron levels fluctuate considerably after eating. Moreover, iron in food directly enters the bloodstream during digestion. A fasting period of 8 to 10 hours ensures an accurate iron deficiency assessment. Oral Glucose Tolerance Test (OGTT) This test checks how your body processes glucose over time. It requires an 8 to 10 hour fast before the test begins. The procedure then involves drinking a glucose solution and taking blood samples at intervals. Fasting Insulin Level Fasting insulin measures insulin resistance directly. Food triggers immediate insulin release. Therefore, any food consumed before this test invalidates the result entirely. Blood Tests That Do Not Require Fasting Complete Blood Count (CBC) The CBC measures red blood cells, white blood cells, and platelets. Food intake does not significantly affect these values. Consequently, you can eat normally before a CBC test. HbA1c (Glycated Haemoglobin) This is a common point of confusion. HbA1c measures your average blood sugar over the past 2 to 3 months. A single meal has no impact on this reading. Therefore, no fasting is required — you can walk in at any time of day. Thyroid Function Test (TSH, T3, T4) Thyroid hormone levels remain stable throughout the day. Food intake does not affect them meaningfully. Moreover, most doctors recommend taking thyroid medication after — not before — your blood draw if you are on thyroid treatment. Vitamin B12 and Folate These nutritional markers reflect long-term dietary patterns and absorption. A single meal does not change them. Consequently, no fasting is needed before these tests. Vitamin D (25-OH) Vitamin D levels reflect months of sun exposure and dietary intake. They do not fluctuate with individual meals. Therefore, you can eat normally before a Vitamin D test. Liver Function Test (LFT) Most LFT markers — including ALT, AST, and bilirubin — are not significantly affected by food. However, if your doctor has ordered an LFT alongside a fasting blood sugar or lipid profile, fast for all tests together. Kidney Function Test (KFT) Creatinine, urea, and electrolytes do not change significantly after eating in most patients. Therefore, a KFT generally does not require fasting. However, your doctor may advise avoiding excess protein the evening before — as very high protein meals can temporarily elevate creatinine slightly. Uric Acid Uric acid levels show minor fluctuations after meals. However, these fluctuations are not significant enough to affect clinical interpretation. Consequently, most labs do not require fasting for a standalone uric acid test. Quick Reference: Fasting vs Non-Fasting Blood Tests Blood Test Fasting Required? Hours to Fast Fasting Blood Sugar (FBS) Yes 8 hours Lipid Profile Yes 10 to 12 hours Iron Studies (Serum Iron, TIBC) Yes 8 to 10 hours Oral Glucose Tolerance Test (OGTT) Yes 8 to 10 hours Fasting Insulin Yes 8 to 10 hours HbA1c No Not required Complete Blood Count (CBC) No Not required Thyroid Function Test (TSH) No Not required Vitamin B12 and Folate No Not required Vitamin D No Not required Liver Function Test (LFT) Usually No As advised Kidney Function Test (KFT) Usually No As advised Uric Acid Usually No As advised What If Your Doctor Has Ordered Multiple Tests Together? This is extremely common — and the answer is straightforward. If even one test in your panel requires fasting, fast for all tests together. For example, if your doctor orders a CBC alongside a fasting blood sugar and lipid profile — fast for 10 to 12 hours. The CBC result will not be affected by the fasting. Furthermore, completing all tests in a single fasting visit saves you an additional trip to the lab. How to Plan a Fasting Blood Test Appointment The easiest approach is to fast overnight and book your appointment first thing in the morning. This minimises discomfort because most of the fasting hours pass during sleep. Additionally, drink a full glass of plain water before leaving home. Hydration makes your veins more accessible — reducing the

You sleep for eight hours and still wake up exhausted. You drag yourself through the afternoon on caffeine and willpower. By evening, even simple tasks feel draining. If this sounds familiar — why am I always tired is one of the most important questions you can ask a doctor. Persistent, unexplained fatigue is not simply laziness or a sign that you need a holiday. In most cases, it signals that something specific is happening inside your body — and a targeted set of blood tests can identify the exact cause quickly, accurately, and affordably. This guide explains the seven most important blood tests for fatigue, what each one reveals, and how getting them done can finally give you a clear answer — and a path to feeling better. When Is Tiredness a Medical Problem? Everyone feels tired occasionally — after a long day, a poor night’s sleep, or an unusually demanding week. However, fatigue becomes a medical concern when it: Furthermore, persistent fatigue is one of the most commonly underinvestigated complaints in India — because most people attribute it to stress or overwork rather than seeking a medical explanation. Consequently, conditions like anaemia, hypothyroidism, and prediabetes — all highly treatable — go undetected for years in millions of Indian adults. 7 Blood Tests That Reveal Why You Are Always Tired 1. Complete Blood Count (CBC) — Detecting Anaemia The Complete Blood Count is the first test most doctors order for unexplained fatigue — and for good reason. Anaemia — a deficiency of healthy red blood cells or haemoglobin — is the single most common medical cause of persistent tiredness in India, particularly among women, young adults, and vegetarians. What it reveals: The CBC measures haemoglobin levels, red blood cell count, and red blood cell size. Low haemoglobin confirms anaemia. Moreover, the MCV value — which measures the average size of red blood cells — tells doctors which type of anaemia is present. Additionally, the white blood cell count and differential reveal whether an ongoing infection or immune issue is contributing to your fatigue — because chronic infections drain energy significantly even when no other obvious symptoms are present. 2. Iron Studies — Ferritin and Serum Iron Many people have iron deficiency fatigue even when their CBC appears borderline normal. This happens because the body depletes iron stores — measured by ferritin — before haemoglobin drops significantly. Consequently, a normal CBC does not always rule out iron deficiency as a cause of tiredness. What it reveals: Furthermore, women of reproductive age, vegetarians, and frequent blood donors are at particularly high risk of low ferritin — and frequently experience pronounced fatigue months before their haemoglobin falls to anaemic levels. 3. Thyroid Function Test (TSH, T3, T4) — Ruling Out Hypothyroidism An underactive thyroid gland is one of the most commonly missed causes of chronic fatigue in India — particularly among women between the ages of 25 and 55. The thyroid gland controls the speed of every metabolic process in the body. When it slows down, everything slows down — including energy production. What it reveals: Moreover, hypothyroidism produces a constellation of symptoms — fatigue, weight gain, hair loss, constipation, feeling cold, depression, and poor concentration — that many people attribute to ageing or stress rather than recognising as a thyroid disorder. Additionally, thyroid disorders are highly treatable once diagnosed. A simple daily tablet normalises thyroid hormone levels and resolves fatigue within four to eight weeks in most patients. 4. Blood Sugar Tests — Fasting Blood Sugar and HbA1c Persistently elevated blood sugar — even in the prediabetic range — significantly impairs cellular energy production. When cells cannot absorb glucose efficiently due to insulin resistance, the body perpetually struggles to generate adequate energy — producing the deep, persistent fatigue that many people with undiagnosed prediabetes experience daily. What it reveals: Furthermore, reactive hypoglycaemia — a blood sugar crash following a sharp post-meal spike — is another blood sugar pattern that causes intense fatigue specifically after meals. An Oral Glucose Tolerance Test (OGTT) identifies this pattern when standard blood sugar tests appear borderline. Consequently, blood sugar testing is essential for any adult experiencing persistent fatigue — particularly those with excess abdominal weight, a family history of diabetes, or a sedentary lifestyle. 5. Vitamin B12 and Folate — Essential for Energy and Nerve Function Vitamin B12 deficiency is an epidemic in India — primarily because B12 is found almost exclusively in animal products. Vegetarians, vegans, and those who consume dairy but little meat are at extremely high risk. Moreover, B12 deficiency develops slowly and silently over years, making it easy to miss until its effects become pronounced. What it reveals: B12 deficiency produces fatigue, weakness, brain fog, poor memory, tingling in the hands and feet, and mood disturbances — all of which respond dramatically to B12 supplementation once the deficiency is identified and treated. Additionally, certain medications — particularly metformin, commonly prescribed for diabetes in India — deplete B12 levels over time. Therefore, anyone taking metformin long-term should test B12 levels annually. 6. Vitamin D — The Sunshine Deficiency India receives abundant sunlight — yet Vitamin D deficiency affects an estimated 70 to 90 percent of the Indian population. This apparent paradox exists because most Indians spend the majority of their day indoors, cover their skin extensively when outside, and have darker skin that requires more sun exposure to synthesise adequate Vitamin D. What it reveals: Furthermore, Vitamin D receptors exist in virtually every tissue in the body — including muscle and brain tissue. Deficiency directly impairs muscle energy production, reduces mood-regulating neurotransmitter function, and contributes to the persistent bone and muscle aches that frequently accompany fatigue in Indian adults. Moreover, Vitamin D deficiency is straightforward to treat — a course of weekly high-dose supplementation normalises levels within eight to twelve weeks in most patients. 7. Liver Function Test (LFT) — Assessing Liver Health The liver performs over 500 metabolic functions — including energy storage and release, protein synthesis, and toxin clearance. When the

You receive your CBC report and notice that your WBC count is flagged as high. Naturally, your first reaction is concern — but a high WBC count does not automatically mean something serious is wrong. In fact, white blood cell counts rise for a wide range of reasons — from a common cold to a bacterial infection to physical stress. However, understanding what your result actually means, what conditions it could indicate, and when it genuinely warrants further investigation is essential before drawing any conclusions. This guide explains everything clearly — so you can have a more informed conversation with your doctor. What Are White Blood Cells (WBC)? White blood cells — also called leukocytes — form the core of your body’s immune system. Your bone marrow produces them continuously, and they circulate through your bloodstream ready to identify and destroy bacteria, viruses, fungi, and other foreign invaders. A normal WBC count in adults ranges from 4,000 to 11,000 cells per microlitre (µL) of blood. Furthermore, the CBC report breaks this total count down into five distinct types of white blood cells — each performing a specific immune function. WBC Type Normal Range Primary Function Neutrophils 40 – 70% Fight bacterial infections Lymphocytes 20 – 40% Fight viral infections and build immune memory Monocytes 2 – 8% Clear dead cells and fight chronic infections Eosinophils 1 – 6% Respond to allergies and parasitic infections Basophils 0.5 – 1% Involved in allergic and inflammatory responses Understanding which specific WBC type is elevated — not just the total count — helps doctors identify the most likely cause significantly more precisely. What Is Considered a High WBC Count? A WBC count above 11,000 cells per µL is medically termed leukocytosis. However, the degree of elevation matters considerably when interpreting the result. WBC Count Interpretation 11,000 – 17,000 / µL Mildly elevated — often infection or inflammation 17,000 – 30,000 / µL Moderately elevated — requires investigation Above 30,000 / µL Significantly elevated — urgent medical evaluation needed Above 100,000 / µL Critically elevated — possible blood cancer emergency Moreover, a single elevated reading does not always confirm a problem. Doctors typically consider the result alongside your symptoms, medical history, and other test findings before reaching any diagnosis. Common Causes of a High WBC Count 1. Bacterial Infection — The Most Common Cause Bacterial infections are the single most frequent cause of an elevated WBC count in India. When bacteria enter the body, the immune system rapidly increases neutrophil production to fight the invader — causing the total WBC count to rise significantly. Common bacterial infections that elevate WBC include: Furthermore, the higher the WBC count and the greater the proportion of neutrophils in the differential count, the more strongly it points toward an active bacterial infection requiring treatment. 2. Viral Infections Viral infections also elevate WBC counts — but in a different pattern from bacterial infections. Additionally, viral infections tend to raise lymphocyte levels rather than neutrophils. Common examples include dengue fever, influenza, COVID-19, infectious mononucleosis, and viral hepatitis. Importantly, in dengue fever specifically, doctors watch the WBC count closely alongside the platelet count — because both typically fall in dengue rather than rise, and any deviation from this pattern guides treatment decisions significantly. 3. Physical or Emotional Stress Intense physical exercise, surgery, trauma, severe emotional stress, or even extreme anxiety can temporarily elevate WBC counts. Consequently, a high reading taken immediately after strenuous exercise or during a period of acute stress may not reflect a genuine immune response at all. This is one reason why doctors always ask about recent physical activity and stress levels before interpreting an elevated WBC result — context matters as much as the number itself. 4. Allergic Reactions and Asthma Allergic conditions — including asthma, hay fever, eczema, and food allergies — typically raise eosinophil levels within the differential count. Moreover, a high eosinophil count in the context of known or suspected allergies is usually reassuring rather than alarming — but still warrants monitoring to ensure it is not masking something else. 5. Parasitic Infections India carries a significant burden of parasitic infections — including malaria, intestinal worms, and other parasites. These infections characteristically raise eosinophil levels. Furthermore, a consistently elevated eosinophil count in someone with digestive symptoms, unexplained weight loss, or a history of travel to endemic areas warrants specific parasitic screening. 6. Inflammatory Conditions Chronic inflammatory conditions — including rheumatoid arthritis, inflammatory bowel disease, and lupus — cause persistent low-to-moderate WBC elevation. Additionally, any acute flare of these conditions can produce a more pronounced spike. Doctors use the WBC count alongside inflammatory markers like CRP and ESR to monitor disease activity in these patients. 7. Medications Certain medications directly stimulate white blood cell production as a side effect. Corticosteroids — widely prescribed in India for allergies, asthma, and inflammatory conditions — are among the most common culprits. Furthermore, lithium and certain colony-stimulating factors used in cancer treatment also elevate WBC counts significantly. Always inform your doctor about every medication you currently take when presenting a CBC report — because drug-induced leukocytosis requires no additional investigation beyond stopping or adjusting the medication. 8. Smoking Chronic smokers consistently show elevated WBC counts compared to non-smokers — even in the absence of active infection or inflammation. Consequently, a mildly elevated WBC in a heavy smoker often reflects chronic low-grade airway inflammation rather than acute disease. 9. Blood Cancers — Leukaemia and Lymphoma This is the cause most people fear when they see a high WBC count — but it is also the least common cause of mild elevation. Leukaemia and lymphoma typically produce dramatically elevated WBC counts — often above 30,000 to 50,000 cells per µL — frequently with abnormal cell types visible on the blood film. However, a mildly elevated count of 12,000 to 15,000 in the context of a current infection or recent illness almost never indicates blood cancer. Furthermore, doctors evaluate the full clinical picture — symptoms, examination, differential count, and repeat testing —

A 26-year-old software professional in Varanasi visits a doctor for routine fatigue. An ultrasound reveals moderate fatty liver. He does not drink alcohol. He is not obese. Yet his liver is already accumulating dangerous levels of fat. This scenario is no longer unusual. Fatty liver without alcohol — medically called Non-Alcoholic Fatty Liver Disease or NAFLD — is now one of the fastest-growing liver conditions among young Indians between the ages of 18 and 40. Moreover, the vast majority of those affected have absolutely no idea they have it. Understanding why this is happening — and what to do about it — could protect your liver before serious damage begins. What Is Non-Alcoholic Fatty Liver Disease (NAFLD)? Non-Alcoholic Fatty Liver Disease occurs when excess fat accumulates in liver cells in people who drink little or no alcohol. The liver is not designed to store large amounts of fat. Consequently, when fat builds up beyond a certain threshold, it triggers inflammation, impairs liver function, and — if left untreated — progresses to more serious conditions. NAFLD exists on a spectrum. At one end sits simple fatty liver — reversible with lifestyle changes. At the other end sits NASH (Non-Alcoholic Steatohepatitis) — an inflammatory form that can progress to liver cirrhosis and liver failure. Furthermore, research increasingly links NAFLD to a higher risk of Type 2 diabetes, heart disease, and kidney problems. The critical point is this — catching NAFLD early, before inflammation develops, gives patients the best possible chance of full recovery. Why Are Young Indians Specifically at Risk? India is now home to one of the largest NAFLD populations in the world. However, what makes the Indian situation particularly alarming is how young the affected population is becoming. Several factors specific to modern Indian lifestyles are driving this trend. 1. The Ultra-Processed Food Revolution Young Indians today consume dramatically more ultra-processed food than any previous generation. White bread, instant noodles, packaged snacks, sugary beverages, maida-based street food, and fast food chains have become daily staples for millions of young professionals and students. These foods are loaded with refined carbohydrates, hidden sugars, and industrial seed oils — all of which the liver converts directly into fat when consumed in excess. Moreover, fructose — the sugar found in soft drinks and packaged juices — is processed almost exclusively by the liver, making it a particularly potent driver of fat accumulation. 2. Sedentary Desk-Based Lifestyles Long work hours at desks, remote working from home, and minimal physical activity have become the default lifestyle for a large proportion of young urban Indians. Physical inactivity directly reduces the body’s ability to burn fat and maintain insulin sensitivity. Consequently, fat that would otherwise be metabolised accumulates — and the liver becomes a primary storage site. Additionally, research consistently shows that even 30 minutes of daily walking significantly reduces liver fat levels over time. 3. Visceral Fat — The Hidden Danger in Slim Indians This is perhaps the most misunderstood factor. Many young Indians appear slim or within a normal BMI range — yet carry significant amounts of visceral fat around their internal organs, including the liver. Indians are genetically predisposed to accumulating visceral fat at lower overall body weights than Western populations. Furthermore, this abdominal fat is metabolically active — it releases fatty acids directly into the bloodstream and into the liver, accelerating fat accumulation regardless of how the person looks from the outside. 4. Insulin Resistance and Prediabetes Insulin resistance — the condition in which the body’s cells stop responding efficiently to insulin — is a major driver of NAFLD. When cells resist insulin, the body compensates by producing more. This excess insulin promotes fat storage in the liver. Prediabetes and insulin resistance are rising rapidly among young Indians, often silently. Moreover, NAFLD and insulin resistance reinforce each other — creating a cycle that worsens both conditions simultaneously unless interrupted. 5. Chronic Stress and Sleep Disruption Work pressure, academic competition, financial stress, and irregular sleep schedules — common among young Indian professionals and students — elevate cortisol levels chronically. High cortisol promotes insulin resistance, increases abdominal fat accumulation, and directly contributes to fatty liver development. Additionally, studies show that sleeping less than six hours per night significantly increases the risk of NAFLD — independent of diet and exercise habits. 6. Skipping Meals and Crash Dieting Many young Indians cycle between overeating and extreme calorie restriction. Ironically, crash dieting and prolonged fasting can accelerate fatty liver — because the body, deprived of dietary energy, increases fat mobilisation from other tissues and dumps it into the liver. Furthermore, the rapid weight loss associated with crash diets can temporarily worsen liver inflammation before improvement begins — making medically supervised dietary changes the far safer approach. 7. Genetic Susceptibility South Asians — including Indians — carry a higher prevalence of the PNPLA3 gene variant, which directly increases susceptibility to NAFLD. Consequently, Indian individuals develop fatty liver at lower levels of metabolic risk than European populations. This genetic factor means that young Indians need to be more vigilant about liver health than people of other ethnicities — even when their weight, diet, and lifestyle seem acceptable by general standards. Warning Signs of Fatty Liver in Young Indians NAFLD is notoriously silent in its early stages. However, some people do experience subtle warning signs that are easy to miss or dismiss: Moreover, by the time more obvious symptoms like jaundice, significant abdominal swelling, or extreme fatigue appear — the liver disease has already progressed to an advanced stage. Early testing is therefore far more valuable than waiting for symptoms. Which Tests Detect Fatty Liver Early? Detecting NAFLD early requires a combination of blood tests and imaging. Here are the most important diagnostic tools: Liver Function Test (LFT) A blood test that measures liver enzymes — particularly ALT (Alanine Aminotransferase) and AST (Aspartate Aminotransferase). Elevated levels indicate liver inflammation or damage. However, in early NAFLD, LFT values can sometimes appear normal — making ultrasound equally important. Ultrasound Abdomen An abdominal ultrasound

Doctors recommend an ultrasound abdomen in Varanasi every day — for stomach pain, liver concerns, kidney issues, gallstones, and dozens of other conditions. Despite being one of the most commonly prescribed diagnostic scans in India, many patients arrive at the radiology centre without fully understanding what the procedure involves, how to prepare for it, or what their report means. Getting these details right matters more than most people realise. Inadequate preparation — particularly not fasting beforehand — can significantly reduce image quality and lead to inconclusive results. Consequently, understanding the procedure before your appointment helps you get the most accurate scan possible. This guide covers everything you need to know about abdominal ultrasound — what it detects, how to prepare, what to expect during the scan, and how much it costs in Varanasi. What Is an Ultrasound Abdomen? An abdominal ultrasound is a non-invasive imaging test that uses high-frequency sound waves to create real-time images of the organs inside your abdomen. Unlike X-rays, it does not use any radiation — making it completely safe for adults, children, and pregnant women alike. A trained radiologist or sonographer moves a handheld device called a transducer across the surface of your abdomen. The transducer sends sound waves into the body and captures the echoes that bounce back from internal organs. Moreover, a computer converts these echoes into detailed images on a monitor, allowing the doctor to assess the size, shape, texture, and condition of each organ. The scan is painless, takes between 20 and 40 minutes, and produces results that no blood test alone can provide. What Does an Ultrasound Abdomen Detect? A single abdominal ultrasound scan gives doctors a comprehensive view of multiple organs simultaneously. Here is what it can assess: Liver Doctors use abdominal ultrasound to detect fatty liver disease, liver cirrhosis, liver cysts, abscesses, and tumours. Additionally, it measures liver size — an enlarged liver often indicates underlying disease that requires further investigation. Gallbladder and Bile Ducts Ultrasound is the most reliable method for detecting gallstones — even very small ones that produce no symptoms yet. Furthermore, it identifies gallbladder inflammation (cholecystitis) and bile duct blockages that can cause jaundice. Kidneys Doctors use the scan to detect kidney stones, cysts, infections, and structural abnormalities. Moreover, it measures kidney size and assesses blood flow — important information for patients with kidney disease or high blood pressure. Pancreas An ultrasound can detect pancreatic inflammation (pancreatitis), cysts, and tumours. However, gas in the bowel sometimes limits the view of the pancreas — in which case, additional imaging may be recommended. Spleen The scan assesses spleen size and detects abnormalities such as enlargement (splenomegaly), which can occur in infections like malaria or typhoid, or in liver disease. Aorta and Major Blood Vessels Doctors use abdominal ultrasound to screen for aortic aneurysms — dangerous bulges in the main abdominal artery — particularly in older patients or those with cardiovascular risk factors. Appendix and Bowel Although bowel gas can limit visibility, ultrasound often detects appendicitis, bowel thickening, and fluid collections in the abdomen. Uterus and Ovaries (in women) A full-bladder pelvic component is often included for female patients — detecting ovarian cysts, uterine fibroids, and other gynaecological conditions. Free Fluid in the Abdomen An ultrasound detects abnormal fluid accumulation (ascites) in the abdominal cavity — a finding commonly associated with liver disease, heart failure, or infection. When Do Doctors Recommend an Ultrasound Abdomen? Doctors prescribe an abdominal ultrasound for a wide range of symptoms and conditions. You may need one if you experience: Additionally, doctors often order an abdominal ultrasound alongside blood tests — such as Liver Function Tests (LFT) or Kidney Function Tests (KFT) — to get both functional and structural information about the same organs together. How to Prepare for an Ultrasound Abdomen Preparation is the single most important factor in getting clear, accurate ultrasound images. Follow these instructions carefully before your scan: Fasting Fast for 4 to 6 hours before the scan. Food and drink cause gas to build up in the bowel, which blocks sound waves and reduces image quality — particularly for the gallbladder, liver, and pancreas. Drinking only plain water during the fasting period is acceptable. Full Bladder (for pelvic assessment) If your doctor has requested assessment of the bladder, uterus, or ovaries alongside the abdominal organs — drink 4 to 6 glasses of water one hour before the scan and do not urinate. A full bladder acts as a window, improving visibility of pelvic organs. Clothing Wear loose, comfortable clothing that allows easy access to your abdomen. A two-piece outfit is ideal. Medications Continue taking all prescribed medications as normal unless your doctor specifically advises otherwise. However, always inform the radiologist about any medications you currently take. What to Bring Carry your doctor’s referral letter, any previous ultrasound or scan reports, and relevant blood test results. These help the radiologist compare current findings with previous ones and provide a more meaningful report. What Happens During the Scan? Understanding what happens during the procedure helps reduce anxiety considerably. Here is what to expect: You will lie on a padded examination table. The radiologist or sonographer will apply a clear, water-based gel to your abdomen — this gel eliminates air pockets between the transducer and your skin, ensuring clear sound wave transmission. Furthermore, the gel is completely harmless and wipes off easily after the scan. The transducer moves gently across different areas of the abdomen. During this process, you may be asked to take a deep breath and hold it briefly — this moves the liver and gallbladder downward and improves the view. The entire scan takes between 20 and 40 minutes, depending on the number of organs being assessed. The procedure is entirely painless. Moreover, you can resume normal eating and activities immediately afterwards. How to Read Your Ultrasound Report Your ultrasound report describes the size, shape, texture, and appearance of each organ examined. Key terms you may see include: Always share your ultrasound report with your referring doctor

Your doctor has ordered an HbA1c test — but you are not entirely sure what it measures or what your result means. You are not alone. Thousands of patients receive this test every month without fully understanding why it matters. The HbA1c test is one of the most powerful tools doctors use to detect and manage diabetes. Unlike a regular blood sugar test, it shows how your blood sugar has behaved over the past two to three months. Moreover, no fasting is required before taking it — making it one of the most convenient and reliable tests in diabetes care. In this guide, you will find everything you need to know — what HbA1c means, what the normal range is, how much it costs in Varanasi, and exactly when you should get it done. What Is the HbA1c Test? HbA1c stands for Glycated Haemoglobin. To understand it, you need to know two things. Your red blood cells contain a protein called haemoglobin. Glucose in your bloodstream naturally sticks to this haemoglobin — a process called glycation. The more glucose you carry in your blood over time, the more glycated haemoglobin builds up. Because red blood cells live for approximately 90 days, measuring this percentage gives doctors a reliable picture of your average blood sugar over that entire period. As a result, the HbA1c test captures what a single fasting blood sugar test cannot — your blood sugar pattern over months, not minutes. This is precisely why doctors trust it so strongly for both diagnosis and long-term monitoring. HbA1c Test Normal Range HbA1c Level What It Means Below 5.7% Normal — no diabetes or prediabetes 5.7% to 6.4% Prediabetes — elevated but not yet diabetic 6.5% or above Diabetes — confirmed on two separate tests Below 7.0% (for diabetics) Well-controlled diabetes 7.0% to 8.0% Moderately controlled — adjustment likely needed Above 8.0% Poorly controlled — risk of complications is high These are standard guidelines. However, your doctor may set a personalised target based on your age, overall health, and medical history. Always discuss your result with your doctor rather than interpreting it alone. What Is the Purpose of the HbA1c Test? Doctors use the HbA1c test for three distinct reasons. Each one matters at a different stage of your health journey. 1. Diagnosing Diabetes and Prediabetes Doctors confirm a Type 2 diabetes diagnosis when two separate HbA1c readings come back at 6.5% or above. Additionally, because no fasting is required, completing this test is far easier than a fasting glucose test. Forgetting to skip breakfast before an appointment is no longer a concern — the HbA1c test removes that barrier entirely. 2. Detecting Prediabetes Before It Progresses A result between 5.7% and 6.4% indicates prediabetes. At this stage, the condition is completely reversible with the right lifestyle changes. However, most people with prediabetes feel perfectly healthy — so they never get tested until diabetes has already developed. Early screening is therefore more important than ever, particularly as prediabetes rates among young Indians continue to rise. 3. Monitoring Long-Term Diabetes Control For people already living with diabetes, the HbA1c test is the single most important monitoring tool available. It shows whether current medications, diet, and lifestyle choices are keeping blood sugar within a safe range. Consequently, doctors rely on it to decide whether to adjust medication, recommend dietary changes, or refer patients for specialist care. HbA1c vs Fasting Blood Sugar — Key Differences Both tests measure blood sugar, but they do so in very different ways. Knowing the difference helps you understand which test your doctor is ordering and why. Factor HbA1c Test Fasting Blood Sugar What it measures 2–3 month average Single moment reading Fasting required No Yes — 8 hours Can eating affect it No Yes Best for Long-term monitoring Quick snapshot How often Every 3 to 6 months As needed In practice, doctors often order both tests together. The fasting blood sugar gives an immediate reading, while the HbA1c confirms the longer pattern. Together, they provide a far more complete picture than either test alone. What Conditions Can Affect HbA1c Accuracy? Although the HbA1c test is highly reliable, certain medical conditions can affect its accuracy. Always tell your doctor if any of the following apply to you: In these situations, your doctor will rely on alternative tests to get more accurate readings. When Should You Get the HbA1c Test Done? Get tested for screening if you: Get tested for diagnosis if you: Get tested for monitoring if you: How to Prepare for the HbA1c Test Preparing for an HbA1c test requires almost no effort at all. Here is everything you need to know: Results typically come back within a few hours to one working day. Therefore, you and your doctor can review findings and take action without any unnecessary delay. How to Read Your HbA1c Report Your report shows a single percentage value. Here is a simple way to understand what it means: In short, never attempt to self-treat based on a single HbA1c reading. Your doctor considers your full medical history, current symptoms, and other test results together before making any treatment decision. HbA1c Test Cost in Varanasi The HbA1c test typically costs between ₹300 and ₹600 in Varanasi, depending on the laboratory and whether it forms part of a broader diabetes screening package. At Prakash Pathology & Radiology, Varanasi, you get accurate and reliable HbA1c results at a transparent, competitive price. Furthermore, you can view all available tests and packages and book your appointment online in just a few minutes — no fasting, no long queues, and no unnecessary hassle. Why Regular HbA1c Testing Matters India has over 77 million people living with diabetes — and millions more with undetected prediabetes. Regular HbA1c testing is the most reliable way to catch blood sugar problems early, monitor existing diabetes effectively, and prevent serious complications before they develop. According to the American Diabetes Association, reducing HbA1c by even 1% significantly lowers the risk of kidney damage, nerve damage,

If you have ever visited a doctor for a routine health check, fever, fatigue, or unexplained weakness — there is a good chance they ordered a CBC test. It is one of the most commonly prescribed blood tests in India, and for good reason. A CBC test gives your doctor a remarkably detailed snapshot of your overall health in a single, simple blood draw. It can detect conditions ranging from anaemia and infections to blood disorders — often before you even feel significantly unwell. This guide explains everything you need to know about the CBC test — what it means, what it measures, what the normal ranges are, what conditions it can detect, and what it typically costs. What Is a CBC Test? CBC stands for Complete Blood Count. It is a blood test that measures and analyses the three main types of cells found in your blood — red blood cells, white blood cells, and platelets. Each of these cell types plays a critical role in keeping your body functioning. When any of them are too high, too low, or abnormal in structure, it signals that something in the body needs attention. The CBC test quantifies all of these cells and gives your doctor the data needed to investigate further. It is a foundational diagnostic test — simple to perform, affordable, and extraordinarily informative. What Does a CBC Test Measure? A standard CBC test measures the following parameters: Red Blood Cell (RBC) Parameters RBC Count — The total number of red blood cells in your blood. Red blood cells carry oxygen from your lungs to every cell in your body. Haemoglobin (Hb) — The protein inside red blood cells that actually binds and transports oxygen. Low haemoglobin is the primary indicator of anaemia. Haematocrit (HCT) — The percentage of your total blood volume that is made up of red blood cells. MCV (Mean Corpuscular Volume) — The average size of your red blood cells. This helps doctors identify the type of anaemia — whether it is caused by iron deficiency, vitamin B12 deficiency, or another cause. MCH and MCHC — Measures of the haemoglobin content within red blood cells, used to further characterise anaemia. RDW (Red Cell Distribution Width) — Measures variation in the size of red blood cells. A high RDW can indicate nutritional deficiencies. White Blood Cell (WBC) Parameters Total WBC Count — The total number of white blood cells, which are your body’s primary immune defenders. A high count usually indicates infection or inflammation. A very low count can suggest immune suppression. Differential Count — Breaks down the total WBC count into specific types of white blood cells: Platelet Parameters Platelet Count — Platelets are the tiny cells responsible for blood clotting. A low platelet count increases bleeding risk. A high count can indicate clotting disorders or inflammation. MPV (Mean Platelet Volume) — The average size of platelets, which can give additional information about platelet function and bone marrow activity. CBC Test Normal Range (Adults) Parameter Normal Range (Adults) RBC Count 4.5 – 5.9 million/µL (men) / 4.0 – 5.2 million/µL (women) Haemoglobin 13.5 – 17.5 g/dL (men) / 12.0 – 15.5 g/dL (women) Haematocrit 41 – 53% (men) / 36 – 46% (women) MCV 80 – 100 fL Total WBC Count 4,000 – 11,000 cells/µL Neutrophils 40 – 70% Lymphocytes 20 – 40% Eosinophils 1 – 6% Platelet Count 1,50,000 – 4,00,000/µL MPV 7.5 – 12.5 fL Important: Normal ranges can vary slightly between laboratories depending on the equipment and reference population used. Always interpret your CBC results in consultation with your doctor — not in isolation. What Can a CBC Test Detect? A CBC test is one of the most versatile diagnostic tools available. Here is what it can help identify: Anaemia The most common reason a CBC is ordered. Low haemoglobin and RBC count confirm anaemia. The MCV and MCH values then help determine the type — iron deficiency anaemia, vitamin B12 deficiency, folate deficiency, or thalassaemia. Anaemia is extremely common in India — particularly among women, children, and the elderly — and often goes undetected for years because its symptoms (fatigue, breathlessness, pale skin) are easy to dismiss. Infections An elevated WBC count — particularly neutrophils — points to a bacterial infection. An elevated lymphocyte count suggests a viral infection. The differential count helps your doctor narrow down the type and severity. Dengue and Viral Fevers A falling platelet count is one of the most important early markers in dengue fever. A CBC test is routinely ordered during fever to monitor platelet levels and detect dengue-related thrombocytopenia early. Leukaemia and Blood Cancers Abnormally high or abnormally low WBC counts — especially with abnormal cell types in the differential — can be an early indicator of leukaemia or other blood cancers. A CBC does not diagnose cancer on its own, but it flags the abnormality that prompts further investigation. Clotting Disorders A very low platelet count (thrombocytopenia) can indicate conditions like ITP (Immune Thrombocytopenic Purpura), liver disease, or bone marrow problems. A high platelet count (thrombocytosis) may indicate inflammation, infection, or a bone marrow disorder. Immune Disorders A persistently low WBC count (leukopenia) can suggest immune suppression — whether from medication, autoimmune conditions, or other underlying causes. Nutritional Deficiencies Low haemoglobin combined with a low MCV typically indicates iron deficiency. A high MCV with low haemoglobin points to vitamin B12 or folate deficiency. Both are extremely common in India and very effectively treated once identified. When Should You Get a CBC Test Done? Your doctor may order a CBC test in the following situations: Even if you feel completely well, a CBC test once a year is one of the simplest and most effective ways to stay ahead of your health. CBC Test Cost in Varanasi The cost of a CBC test in Varanasi typically ranges from ₹150 to ₹400, depending on the laboratory and whether it is part of a larger health package. At Prakash Pathology & Radiology, Varanasi, the CBC