TB bacteria DNA and rifampicin resistance in sputum.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
GeneXpert MTB/RIF is a rapid diagnostic test used to detect Mycobacterium tuberculosis (TB) bacteria and rifampicin resistance in sputum samples. This test is typically performed in the early morning, as sputum collection is best at this time. The results are interpreted by a qualified health worker and must be considered in the context of the patient's symptoms and clinical history. If the test is positive, it indicates the presence of TB bacteria and rifampicin resistance, which may require further treatment. If the test is negative, it suggests the absence of TB bacteria, but the test may need to be repeated if symptoms persist. GeneXpert MTB/RIF is a useful tool for early detection and management of TB, but it should be used in conjunction with other diagnostic methods and clinical assessment.
Sources: SI health summary (own words); MedlinePlus Lab Tests and CDC as references
Cough for 2 weeks or more, suspected TB.
Early morning sputum is best. Laboratory-specific; see the reference range on your report. High or positive may mean: TB detected (and resistance if shown). Low or negative may mean: TB not detected; repeat if symptoms continue. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
⚠️ Reference ranges vary by lab, age and sex — always use the range printed on your own report.
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
Why is GeneXpert MTB/RIF done?
Cough for 2 weeks or more, suspected TB.
Do I need to prepare or fast for GeneXpert MTB/RIF?
Early morning sputum is best. Laboratory-specific; see the reference range on your report. High or positive may mean: TB detected (and resistance if shown). Low or negative may mean: TB not detected; repeat if symptoms continue. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
SI text CC BY 4.0; decoder reference data (cited per range); LOINC codes free with attribution (notice included).
Sources: SI health summary (own words); MedlinePlus Lab Tests and CDC as references