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Home›All tests›Diabetes

Blood Sugar — Fasting (FBS)

Also known as: sugar test, fasting sugar, FBS, glucose fasting

Measures blood glucose after an overnight fast — the standard first check for diabetes.

SampleBlood
Report6 hours
Fasting10 hours
CollectionHome or centre

What’s measured 1 parameters

  • Glucose, Fasting

Why this test is done

To screen for or monitor diabetes and pre-diabetes. Usually the first test a doctor orders when sugar is suspected.

How to prepare

Fast for 10–12 hours. Water is allowed; tea, coffee and sugar are not.

Read more about this

Written by our team and reviewed before publishing.

What "fasting" before a blood test actually meansTen hours, water allowed, tea is not. The small details that decide whether your result is usable — and which tests need no fasting at all.4 min readHbA1c or fasting sugar — which diabetes test do you actually need?One shows a single moment, the other shows three months. Why the difference matters, and why fasting the night before your test can hide a real problem.5 min read

How it works

  1. Pick a 60-minute slot that suits you.
  2. A certified phlebotomist arrives, confirms your OTP, and collects into barcoded tubes.
  3. Your sample is processed under NABL-grade protocols and reviewed by our pathologist.
  4. The doctor-signed report reaches your WhatsApp and your account in 6 hours.

Common questions

Do I need to fast before Blood Sugar — Fasting (FBS)?

Yes — 10 hours of fasting is required. Water is allowed throughout. We send a WhatsApp reminder the night before so it is not a surprise in the morning.

How soon will I get the report?

Within 6 hours of collection. It arrives on WhatsApp as a doctor-signed PDF, and a copy stays in your account to download whenever you need it.

Can the sample be collected at home?

Yes, anywhere in our South Delhi service area. Home collection is free on orders above ₹500, and the fee below that is shown before you confirm.

What does Blood Sugar — Fasting (FBS) cost?

₹70. That is the full price — there are no separate reporting or handling charges, and you can pay online or on collection.

Costs less as part of a panel

This test is included in these packages — usually cheaper than booking it alone.

GEO₹720DIABETIC PROFILE₹1500Reliable-1.1₹1750Reliable-1.1GURPAL (242001)₹1750

Others also book

Blood Sugar — Random (RBS)₹701 paramsBlood Sugar — Post Prandial (PPBS)₹701 paramsGlucose Tolerance Test (GTT) — 2 hour₹803 paramsHbA1c — Glycated Haemoglobin₹5002 paramsInsulin — Fasting₹6001 paramsUrine Microalbumin / Creatinine Ratio₹6503 params
₹70₹25072% off
Book home collection
  • Free home collection in South Delhi
  • Report in 6 hours, on WhatsApp
  • Reviewed and signed by our pathologist
  • Pay cash or UPI on collection

Important. This page describes what a test measures and costs. It is not medical advice, and a result needs a doctor to interpret it alongside your symptoms and history. If you have severe symptoms — chest pain, breathlessness, heavy bleeding, fainting or a very high fever — do not wait for a test. Seek emergency care or call 112 immediately.