Sonia Verma Sonia Verma Asked 6 months ago

How to read a tb test result?

My husband recently got a TB test, and we're anxious to know what the result means. It's just a red bump, but how do we properly read a TB test result to know if it's positive or negative?

5

5 answers

Rajesh Kumar Rajesh Kumar Joined Jan 2026 6 months ago
Most liked

Staring at my arm trying to figure out if a 5mm bump is actually 10mm was too much work for my tired eyes. Save yourself the headache and just let the lab technician measure it. They do this all day and will tell you the result in a minute.

Aditya Sen Aditya Sen Joined May 2026 5 months ago

If you got a blood test like IGRA instead of a skin test, the report will simply say 'positive', 'negative', or 'indeterminate' on your health app portal. It's much easier to read than the skin test, but you still need your doctor to upload the final advice.

Powered by

Consult a internal medicine specialist

Nidhi Shah Nidhi Shah Joined Jan 2026 6 months ago

I panicked so much when my skin turned puffy, but the doctor told me it was a normal immune reaction and my actual result was negative. Redness is completely normal, so try not to stress before they officially measure it.

Kabir Mehta Kabir Mehta Joined Mar 2026 6 months ago

Bro, if you are talking about the skin prick test, they measure the hard bump, not the red skin around it. If it is flat, it is negative. Don't try to measure it yourself with a school scale, just show it to the doc.

Related reads

All articles
Amit Sharma Amit Sharma Joined Feb 2026 6 months ago

Haan, skin tests can be very confusing to read on your own, na. The measurement has to be done very precisely between 48 to 72 hours. Just go back to the hospital where they did it, they will tell you the result quickly.

Evidence-based health, reviewed by clinicians. Free, weekly.