The Diwali Health Checkup: 7 Blood Tests Every Indian Family Should Do Before the Festival Season

Quick answer: Before Diwali, a family health checkup should cover seven blood tests: CBC, HbA1c with fasting glucose, lipid profile, liver function, kidney function, thyroid (TSH), and vitamin D with B12. Add a blood pressure reading, which is not a blood test but matters just as much. Get them done two to three weeks ahead so you have time to read the results and see a doctor before the festival rush.

Every year, families clean the house, buy sweets, and plan gifts for their parents. Very few plan the one thing that quietly matters most: knowing what is happening inside the body.

That gap is not small. India's largest national study of non-communicable disease, ICMR-INDIAB, published in The Lancet Diabetes & Endocrinology in 2023, estimated about 101 million Indians living with diabetes, 136 million with prediabetes, and 315 million with hypertension. It also estimated 213 million people with high cholesterol. Most of these conditions cause no pain in the early years, which is exactly why they are found late.

Diwali is a natural reminder. Families are together, parents are visiting, and the sweets and fried food of the next few weeks are about to put extra load on blood sugar, cholesterol and blood pressure. This guide gives you a simple list of tests, what each one finds, and how to read the report so the doctor visit is useful.

Why do a health checkup before Diwali, not after?

1. You get a baseline. If your sugar or cholesterol is already high, you can adjust what you eat during the festival, instead of finding out in December.
2. Families are in one place. Parents, siblings and grandparents are easier to take to the lab together than at any other time of the year.
3. Doctors are available. Clinics get busier right after Diwali. Getting reports early means a calmer consultation.
4. It is a gift that lasts. A checkup for your parents is one of the few presents that can change their next ten years.

Who should get tested, and how often?

These are general starting points, not medical advice. If you already have a condition or take regular medicines, follow your own doctor's schedule.

The 7 blood tests, one by one

The ranges below are common reference points, not diagnoses. Labs use slightly different ranges and methods, so always compare your value to the range printed on your own report.

1. Complete Blood Count (CBC)

• What it checks: haemoglobin, red and white blood cells, and platelets.
• What it can find: anaemia (very common in Indian women and older adults), infections, and clotting or bone-marrow problems.
• What to look at first: haemoglobin. Typical adult reference ranges are around 13 to 17 g/dL for men and 12 to 15 g/dL for women. A low value needs a follow-up question: is it iron, B12, or something else?

2. HbA1c and fasting glucose

• What it checks: average blood sugar over the past three months (HbA1c) and your sugar after an overnight fast.
• What it can find: prediabetes and diabetes, often years before symptoms.
• Reference points (American Diabetes Association): HbA1c below 5.7% is normal, 5.7% to 6.4% is prediabetes, and 6.5% or above suggests diabetes. Fasting glucose below 100 mg/dL is normal, 100 to 125 is prediabetes, and 126 or above suggests diabetes. A diagnosis needs confirmation by your doctor.
• Why before Diwali: prediabetes is reversible for many people, and festival food is the moment people most want a clear picture.

3. Lipid profile

• What it checks: total cholesterol, LDL, HDL and triglycerides.
• What it can find: raised risk of heart attack and stroke, often silently.
• Common reference points: total cholesterol under 200 mg/dL, triglycerides under 150 mg/dL, LDL under 100 mg/dL for most people, and HDL above 40 mg/dL in men and 50 mg/dL in women. Your doctor may set stricter LDL targets if you have diabetes or heart disease.
• Read more: our guide to high triglycerides and the TG:HDL ratio.

4. Liver function test (LFT)

• What it checks: SGPT (ALT), SGOT (AST), bilirubin, albumin and related markers.
• What it can find: fatty liver, hepatitis, medicine or alcohol effects.
• What to look at first: SGPT. Many labs list an upper limit near 40 U/L, though it varies. Fatty liver is common and often shows up first as a mildly raised SGPT.

5. Kidney function test (KFT)

• What it checks: creatinine, urea, uric acid and a calculated filtering score called eGFR.
• What it can find: early kidney damage, which is common with long-standing diabetes and high blood pressure.
• What to look at first: creatinine and eGFR together. A single reading outside range is a reason to repeat the test, not to panic.

6. Thyroid profile (TSH)

• What it checks: thyroid stimulating hormone, sometimes with T3 and T4.
• What it can find: an underactive or overactive thyroid, which can cause tiredness, weight change and mood changes and is common in women.
• What to look at first: TSH. Many labs show a range around 0.4 to 4.0 mIU/L, but this varies, and pregnancy and age change the targets.

7. Vitamin D and vitamin B12

• What it checks: two nutrients that are frequently low in Indian adults, including people who live in sunny places and people who eat vegetarian diets.
• What it can find: deficiencies linked to bone pain, fatigue, tingling in the hands and feet, and low mood.
• What to look at first: compare your value with your lab's range. Many labs treat vitamin D below 20 ng/mL as deficient, but cut-offs differ. Check vitamin B12 against your lab's range too. Do not start high-dose supplements without your doctor's advice.

Do not forget: blood pressure

It takes one minute and costs nothing. Ask your parents' doctor or pharmacist to check it, or use a validated home monitor. Hypertension is the biggest of the silent numbers in the ICMR-INDIAB estimates.

How to prepare for the tests

• Fasting: HbA1c and CBC do not need fasting. Fasting glucose and often the lipid profile do, usually 8 to 12 hours of nothing but water. Ask the lab when you book.
• Medicines: do not stop any medicine on your own. Tell the lab and your doctor what you take, including supplements.
• Timing: book a morning slot, which suits fasting tests and gets reports back the same or next day at most labs.
• Book as a family: many labs offer home collection and family packages. Compare what each package includes against the seven tests above, rather than choosing on price alone.

A gift idea for your parents

If you are choosing something for your parents this Diwali, consider booking a full checkup for them and going along. Then do the part that most families skip: read the report together afterwards. Many parents receive a stack of numbers, glance at the red flags, and put the file away. Understanding it takes only a few minutes if the numbers are explained in plain language.

After the report: understand it before you see the doctor

When the results arrive, you will usually see forty to eighty values with reference ranges and flags. Reading them before the appointment helps you ask better questions and remember the doctor's advice. For a step-by-step walkthrough, see our complete guide to reading a medical lab report.

NirogGyan's free Lab Report Analyzer explains each value in plain language: what it measures, whether it sits in range for age and gender, and what to ask your doctor. Upload the PDF from any lab. It is meant to help you prepare, not to replace a doctor. Your medical lab report is protected with 256-bit SSL encryption in transit and at rest. Read our Privacy Policy.

When not to wait for a routine appointment

If a report has a value flagged as critical, or if anyone in the family has chest pain, difficulty breathing, sudden weakness on one side, slurred speech, fainting or severe abdominal pain, contact a doctor or go to a hospital the same day. Do not use a blog or an app as a reason to delay care.

Frequently Asked Questions

Which blood tests should I do before Diwali?

A sensible set is CBC, HbA1c with fasting glucose, lipid profile, liver function, kidney function, TSH, and vitamin D with B12, plus a blood pressure reading. Your doctor may add or remove tests based on your history.

Do I need to fast for a full body checkup?

For fasting glucose and usually the lipid profile, yes, for about 8 to 12 hours with only water allowed. CBC and HbA1c do not need fasting. Follow your lab's instructions.

How often should I get a health checkup?

Once a year is a reasonable baseline after age 30 if you feel well, and more often if you have a chronic condition or family history. Follow your own doctor's schedule if you have one.

Which tests are most important for parents above 60?

Blood pressure, HbA1c and glucose, lipid profile, kidney function, liver function, CBC, thyroid and vitamin B12 are common starting points. A doctor will usually add tests based on their medicines and history.

Can I read my own lab report?

Yes, you can understand a lot from the reference ranges and flags, and a tool such as the NirogGyan Lab Report Analyzer can explain each value in plain language. Treat it as preparation for a doctor visit, not a diagnosis.

Is a normal report a reason to skip the doctor?

A normal report is good news, but it is a snapshot. Symptoms still deserve a medical opinion, and your checkup schedule should continue.

Can I eat festival sweets before a blood test?

Avoid heavy sweets and fried food for a day or two before a lipid or glucose test, and follow the fasting instructions. Eating normally is better than crash-dieting before a test, so your result reflects real life.

Keep reading:

• How to Read a Medical Lab Report: The Complete Guide to Your Blood Test Results (2026)
• High Triglycerides: What Your Number Means and Why TG:HDL Matters
• Vitamin D & B12 Deficiency in India: Why It's So Common (2026 Guide)

Sources

• Metabolic non-communicable disease health report of India: the ICMR-INDIAB national cross-sectional study (ICMR-INDIAB-17). The Lancet Diabetes & Endocrinology, 2023.
• American Diabetes Association. Diagnosis and Classification of Diabetes: Standards of Care in Diabetes 2024. Diabetes Care, 2024.

This article is for general health education and is not medical advice. It does not diagnose or treat any condition. Consult a qualified doctor about your own results.