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Insulin, Fasting, Serum (Insulin Fasting)

Also known as: Fasting insulin

Parameters1 tested
SampleBlood
Fasting10-12 hrs
Report inSame day

How to prepare

Fasting needed

Do not eat for 10-12 hrs before the test. Plain water is fine.

Good to know

Fast for 10–12 hours before the test (only water allowed). Take your usual medicines unless your doctor says otherwise.

Medicines

Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.

Comfortable clothes

Wear a loose sleeve so the sample can be taken easily from your arm.

How it works

Book onlinePick a time slot
Home visitSealed, sterile kit
Lab testingBarcode tracked
ReportIn same day

About this test

Fasting insulin shows how much insulin your pancreas is making. High fasting insulin is an early sign of insulin resistance, common in PCOS, obesity and prediabetes.

Why is this test done?

  • Check insulin resistance
  • PCOS evaluation
  • Prediabetes risk

Symptoms — when should you get tested?

  • Weight gain around the waist
  • Dark skin patches on the neck
  • Irregular periods (PCOS)
  • Sugar cravings

Normal range

Adults 2.6 – 24.9 µIU/mL

Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.

If your result is high

High fasting insulin suggests insulin resistance.

Common reasons
  • Insulin resistance
  • Obesity
  • PCOS
  • Prediabetes

If your result is low

Low insulin may be seen in type 1 diabetes.

Common reasons
  • Type 1 diabetes
  • Long-standing type 2 diabetes

How is the test done?

  1. 1
    Book online

    Choose your slot for home collection or a visit to our centre.

  2. 2
    Blood sample taken

    A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.

  3. 3
    Tested in our lab

    Your barcoded sample is tested on automated machines with strict quality checks.

  4. 4
    Report on WhatsApp

    A pathologist checks the result and the report reaches you on WhatsApp and email.

Save more with a health package

This test is also included in these checkups along with many other tests.

Diabetes Care Package 6 tests · 8 parameters
Contact for price

Frequently asked questions

Yes. Please fast for 10-12 hrs before your sample is collected. You can drink plain water.

Your report is usually ready in same day after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.

Please call our team to confirm whether home sample collection is available for your location and test.

This test needs a blood sample. Fast for 10–12 hours before the test (only water allowed). Take your usual medicines unless your doctor says otherwise.

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