mtb genexpert
InfectionSputum sampleResults 2-3 daysNo fasting
MTB GeneXpert
A rapid molecular test that detects tuberculosis bacteria and checks for rifampicin resistance from a sputum sample. Delivers fast, accurate results to guide TB care.
Sample
Sputum
Results
2-3 days
Fasting
Not required
Follow-up
Optional add-on
What this test detects
Mycobacterium tuberculosis DNA
Real-time PCR (GeneXpert)
Qualitative · Detected/Not detected
Rifampicin resistance
Real-time PCR (GeneXpert)
Qualitative · Resistance detected/Not detected
When to get this test
Suspected active TB
Useful for chronic cough, fever, night sweats, and weight loss.
Rapid TB confirmation
Provides quick detection of tuberculosis from a single sputum sample.
Drug resistance check
Identifies rifampicin resistance to help guide treatment decisions.
How to prepare
01
Provide a deep-cough sputum sample, ideally early morning.
Common questions
Why is rifampicin resistance important?
It signals possible drug-resistant TB, which needs a different treatment approach.
How do I produce a good sputum sample?
A deep cough that brings up phlegm from the lungs, ideally in the early morning, gives the best sample for testing.