The standard "executive health checkup" sold by most Indian diagnostic labs covers the wrong tests for the wrong patients. It runs lipids, fasting glucose, liver enzymes, kidney function, and a TSH, calls everything "normal" if it is in range, and sends you home with a clean bill of health. Meanwhile, the metabolic and hormonal stories that actually predict the next decade of your life are running quietly underneath. This is the practical, evidence-based set of five labs every Indian adult over 30 should run periodically, and what to do with the results.
Why the standard checkup misses the picture
The standard health checkup was designed in an era when the leading causes of disease in middle-aged adults were obvious things: visible diabetes, frank hypertension, advanced kidney disease, advanced liver disease. The tests it includes catch those late-stage problems.
What the standard checkup misses is the early biology. The fasting insulin that has been climbing for fifteen years before the glucose moves. The thyroid antibody that has been positive for a decade before the TSH crosses the abnormal threshold. The vitamin D deficiency that has been running for years before any symptom can be traced to it. The TG to HDL ratio that signals metabolic distress before the lipid panel looks abnormal.
For most Indian adults over 30, the disease that will define their next two decades is already in motion. The standard checkup tells you whether it has crossed the late-stage threshold. The tests below tell you whether the early biology is in good shape, while there is still time to bend the trajectory.
Lab 1: HbA1c and fasting insulin (read together)
Glucose alone tells you only the late-stage story of metabolic disease. Insulin tells you the early one. Read together, they catch the metabolic picture decades before it becomes type 2 diabetes.
HbA1c. Three-month average glucose. Normal is below 5.7%. Prediabetic is 5.7-6.4%. Diabetic is 6.5% or above. Most Indians do not realise that even a 5.5% can be problematic in the wrong context.
Fasting insulin. Should be below 8 mIU/L in healthy adults. Often runs 12-25 in patients with insulin resistance long before HbA1c moves. The single most useful test for catching early metabolic disease.
HOMA-IR. Calculated from fasting insulin and glucose. Below 1.5 is healthy. Above 2.5 is meaningful insulin resistance.
What to do with the results:
- HbA1c above 5.7% or fasting insulin above 8: read the insulin resistance silent driver and the prediabetes 90-day protocol. Address sleep, breakfast, meal order, and post-meal walks before you do anything else.
- HbA1c above 6.0%: take the prediabetes diagnosis seriously. The 90-day window matters.
- HbA1c above 6.4%: type 2 diabetes territory. Specialist care plus root-cause work in parallel.
The diabetes pillar guide is the comprehensive read.
Lab 2: Full thyroid panel with antibodies
TSH alone is a screening test, not a diagnostic one. The full panel catches Hashimoto's years before the gland fails, and catches conversion problems that TSH cannot see.
TSH. Optimal is 1.0-2.5. Many labs report up to 5.5 as normal, but symptomatic adults often need it lower than that.
Free T4. Should sit comfortably mid-range.
Free T3. The active hormone. Should sit upper-half of range. Often missed.
Reverse T3. Raised in stress, dieting, or chronic illness.
Anti-TPO. Hashimoto's antibody. Can be positive years before TSH moves.
Anti-thyroglobulin. Second autoimmune marker.
What to do with the results:
- TSH between 2.5 and 5.5 with symptoms or positive antibodies: this is subclinical thyroid disease, worth discussing with your doctor before any tablet decision.
- Positive antibodies: Hashimoto's. Address gut, vitamin D, selenium, and stress before any tablet decision.
- Low free T3 with normal TSH and free T4: conversion problem. Address ferritin, selenium, stress, and the underlying drivers of poor conversion.
Lab 3: Vitamin D, B12, ferritin
These three nutrients together account for an enormous fraction of fatigue, mood, hair loss, and cognitive symptoms in Indian adults. Most patients are deficient in at least one of them. Most have never been tested.
Vitamin D (25-OH). Optimal is above 50 ng/ml. Most Indian adults run below 30. Affects immune function, bone, mood, insulin sensitivity, autoimmune activity.
Vitamin B12. Optimal is above 500 pg/ml. Most labs call below 200 deficient, but symptoms can appear at 300-400. Affects energy, mood, cognitive function, especially in vegetarians.
Ferritin. Iron stores. Optimal is 70-100 ng/ml in symptomatic patients. Below 30 is frank deficiency. Affects energy, hair growth, exercise tolerance, thyroid conversion.
What to do with the results:
- Vitamin D below 30: replace with 4,000-6,000 IU daily for 8-12 weeks, then maintenance dose. Retest at month three.
- B12 below 500: supplement with methylcobalamin 1,000-2,000 mcg daily. If below 200, consider injections.
- Ferritin below 70 in symptomatic patients: address the cause and supplement carefully. Iron supplementation in the wrong patient (those without deficiency) can be harmful.
These three together usually produce noticeable improvement in energy and clarity within four to six weeks of replacement.
Three nutrient labs explain a substantial fraction of the fatigue and mood symptoms in Indian adults. Most patients have never had them run.
Lab 4: Lipid panel with TG to HDL ratio
The standard lipid panel is included in most checkups, but the way it is read matters more than the panel itself. The TG to HDL ratio is one of the most useful single numbers for predicting cardiometabolic risk in Indian adults.
Total cholesterol. Less informative than the components.
LDL cholesterol. The standard "bad cholesterol". Useful but often over-emphasised relative to other markers.
HDL cholesterol. Optimal is above 50 in women, above 40 in men.
Triglycerides. Optimal is below 100. Above 150 is meaningful.
TG to HDL ratio. The most useful derived number. Optimal is below 2.0. Above 3.0 is a strong sign of insulin resistance and cardiometabolic distress.
What to do with the results:
- TG to HDL ratio above 3: this is metabolic syndrome territory. Read the insulin resistance silent driver and address the upstream story.
- LDL above 130 with normal TG to HDL ratio: standard cardiovascular care, lifestyle work, sometimes statin where appropriate.
- LDL high with TG to HDL also high: the metabolic story is driving everything. Address the metabolic side first, the LDL often follows.
The lipid panel without context is one of the most over- and under-interpreted tests in clinical practice. The TG to HDL ratio gives you a meaningful read.
Lab 5: hs-CRP
A single inflammation marker that gives you a useful read on systemic inflammatory load. Often overlooked but cheap and informative.
hs-CRP (high-sensitivity C-reactive protein). Optimal is below 1 mg/L. Between 1 and 3 is mild inflammation. Above 3 is significant inflammation, with cardiovascular, autoimmune, and metabolic implications.
What to do with the results:
- hs-CRP above 1 in an asymptomatic adult: look for the upstream driver. Often a gut story, an emerging autoimmune picture, or visceral fat.
- hs-CRP above 3: significant inflammation. Investigate further with disease-specific antibody panels, comprehensive stool analysis, and a thoughtful clinical history.
- hs-CRP that drops on intervention: a good signal that the protocol is working.
This single number, run every six to twelve months, is one of the better ways to track whether your overall protocol is reducing inflammatory load over time.
How often to run them
For most adults over 30 with no specific clinical concerns:
- Annually for the first year, to establish baseline patterns
- Every two years thereafter for the metabolic, thyroid, lipid, and hs-CRP panel
- Every year for vitamin D, B12, and ferritin if low at baseline
For adults with chronic conditions or active symptoms, more frequent testing is appropriate, often every three to six months for the relevant markers.
For adults with risk factors (family history, weight changes, fatigue, mood symptoms, autoimmune family history, PCOS history), testing should start before 30, often in the mid-twenties.
Where to get them done
In India, the major chains (Thyrocare, Metropolis, SRL, Lal PathLabs, Dr. Lal) all offer the panels above. Quality is generally consistent across these labs for the standard tests. For the more specialised tests (HOMA-IR calculation, hs-CRP, comprehensive thyroid antibodies), Thyrocare and Metropolis tend to be reliable.
Cost ranges:
- Full thyroid panel with antibodies: 2,000-4,000 rupees
- Vitamin D, B12, ferritin: 2,000-3,500 rupees combined
- HbA1c, fasting insulin, glucose, HOMA-IR: 1,500-2,500 rupees
- Lipid panel: 600-1,200 rupees
- hs-CRP: 400-800 rupees
The total for the comprehensive set is usually 6,500-12,000 rupees, depending on the lab and the city. This is meaningful money, but it is the most useful 10,000 rupees you can spend on your health if you have not had these tests run.
