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Immunology & Serology Home collection available

Tissue Transglutaminase (TTG) Antibody, IgA, Serum

Parameters1 tested
SampleBlood
FastingNot required
Report in24-48 hrs

How to prepare

No fasting needed

You can eat and drink normally before the test.

Good to know

No special preparation needed.

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 24-48 hrs

About this test

tTG IgA is the main blood test for celiac disease, where gluten (in wheat, barley and rye) damages the small intestine.

Why is this test done?

  • Screen for celiac disease
  • Investigate long-lasting diarrhoea or poor growth
  • Monitor gluten-free diet

Symptoms — when should you get tested?

  • Long-lasting diarrhoea or bloating
  • Weight loss or poor growth in children
  • Iron deficiency not improving
  • Mouth ulcers or itchy rash

Normal range

tTG IgA < 20 U/mL

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

If your result is high

A high level strongly suggests celiac disease; a gut biopsy may confirm it.

Common reasons
  • Celiac disease

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.

Frequently asked questions

No. Keep eating gluten, or the test may be falsely negative.

No fasting is needed for this test. You can eat and drink normally.

Your report is usually ready in 24-48 hrs 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. No special preparation needed.

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