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Tuberculosis Test
Xpert MTB/RIF RT-PCR Test — a WHO-endorsed test for diagnosis of TB
WHO-endorsed multiplex real-time PCR for molecular diagnosis of tuberculosis (MTB). Extremely reliable for simultaneous detection of MTB and Rifampicin resistance (a marker for MDR tuberculosis).
Molecular Diagnosis of Tuberculosis tests
| System | Tests Done |
|---|---|
| Test | Xpert MTB/RIF RT-PCR |
| Detection | Mycobacterium tuberculosis (MTB) |
| Resistance marker | Rifampicin resistance (MDR-TB marker) |
| Turnaround | Same day (process < 3 hours) |
| Sensitivity | Detects approximately 50–150 cfu/mL |
Technique
WHO-endorsed multiplex real-time PCR for molecular diagnosis of tuberculosis (MTB).
Used for
Extremely reliable for simultaneous detection of MTB and Rifampicin resistance, a marker for MDR tuberculosis.
Specimen
Pulmonary samples: sputum, bronchio-alveolar lavage (BAL). Site-specific specimens: all body fluids, FNAC aspirate, pus, biopsies (endometrium, lymph node, etc.).
Advantages
Cost-effective, rapid same-day results (test process under 3 hours), and extremely sensitive—detects about 50–150 cfu (bacteria)/mL.
How to prepare & what to expect
- Specimen type depends on the suspected site of infection—share your doctor’s advice with our front office.
- Pulmonary samples such as sputum or BAL, and site-specific samples such as fluids, FNAC, pus or biopsy tissue, can be accepted as advised.
- Discuss results with your physician for clinical correlation and treatment decisions.