TB — Interferon Gamma Release Assay
Also known as: TB gold, quantiferon, IGRA, TB blood test
Blood test for tuberculosis infection, unaffected by prior BCG vaccination.
What’s measured 4 parameters
- TB Antigen Response
- Mitogen Control
- Nil Control
- Interpretation
Why this test is done
For a persistent cough, unexplained weight loss or fever, and for screening contacts of a TB patient.
How to prepare
No fasting is needed. You can give this sample at any time of day. A single blood draw is all that is required. Our phlebotomist collects at your address in a 60-minute slot, seven days a week from 6 AM. The report is signed by our pathologist and reaches you on WhatsApp and in your account within 72 hours.
How it works
- Pick a 60-minute slot that suits you.
- A certified phlebotomist arrives, confirms your OTP, and collects into barcoded tubes.
- Your sample is processed under NABL-grade protocols and reviewed by our pathologist.
- The doctor-signed report reaches your WhatsApp and your account in 72 hours.
Common questions
Do I need to fast before TB — Interferon Gamma Release Assay?
No. TB — Interferon Gamma Release Assay does not require fasting, so you can book any slot that suits you.
How soon will I get the report?
Within 72 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 TB — Interferon Gamma Release Assay cost?
₹3500. That is the full price — there are no separate reporting or handling charges, and you can pay online or on collection.