<prompt> In Revised National TB Control Program mainstay of diagnosis of pulmonary tuberculosis is:Sputum AFBCXRClinical examinationPCR  <response>: Ans: A Sputum AFB Ref: Textbook of Preventive and Social Medicine, 22nd edition page no 396 Flowchart is by Textbook of Community Medicine, 1st edition, Armed Force Medical College, Pane COUGH FOR 2 WEEKS OR MORE 2 Sputum smears - - 1 or 2 Positives 2 Negatives Antibiotics10-14 days Cough Persists Repeat 2 SputumExamination 1 or 2 Positives 2 Negative X-ray chest Suggestive of TB Negative for TB Sputum Positive PTBAnti TB Treatment Sputum negative PTB Anti TB Treatment Non TB 