Two sputum samples are stained and examined for acid-fast bacilli (AFB), the bacteria that cause TB.
Testing two samples (spot and early morning) improves detection of pulmonary tuberculosis, as recommended under national TB guidelines.
Cough for more than 2 weeks, breathlessness, wheezing, fever with chest symptoms, or TB exposure.
No fasting needed.
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One on the spot and one early the next morning, coughing deeply from the chest.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Sputum (deep-cough) sample, ideally first thing in the morning; other samples (fluid, pus) may be used.
Usually within 11–35 hours after the sample reaches the lab. You will receive the report online.