Grows Mycobacterium tuberculosis (and other mycobacteria) from a sample in culture.
The most sensitive way to confirm TB, identify the organism and allow drug-susceptibility testing — important for drug-resistant TB.
Cough for more than 2 weeks, breathlessness, wheezing, fever with chest symptoms, or TB exposure.
No fasting needed.
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TB bacteria grow very slowly; cultures are observed for up to 6–8 weeks before being reported negative.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Sputum or other sample (fluid, tissue, pus) as advised; culture-based tests may use a positive culture.
Usually within 44–45 days after the sample reaches the lab. You will receive the report online.