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What is GeneXpert test?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hi doctor,

Is there any MDR-TB test for formalin based tissue? I had biopsy, but they dipped it in formalin. Now I asked for another biopsy for GeneXpert test. What to do?

Answered by Dr. Vivek Chail

Hi,

Welcome to icliniq.com.

The GeneXpert test is a molecular test which detects the DNA (deoxyribonucleic acid) in TB bacteria (tuberculosis). Formalin treated tissue might have TB bacteria which are dead and do not have viable DNA material. Therefore, repeat biopsy has been suggested.

Answered byDr. Vivek Chail

Medically reviewed byDr. K. Shobana

Published At April 7, 2016
Reviewed AtFebruary 16, 2024

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