Minimum number of sputums require to confirm diagnosis TB according to RNTCP guidelines:

Ans. b. TwoAFB SPUTUMS SMEARS (SS) FOR DIAGNOSIS OF CASE OF TB (NEW GUIDELINES)TB suspect A person with productive cough >2 weeks with or without hemoptysis, fever for >2 weeks, chest pain, weight loss, night sweats, and loss of appetite is subjected to 2 SS examinationsNumber of specimens required for diagnosis of smear positive pulmonary Tuberculosis: TwoChances of detecting smear positive cases:With 1 sample: 80%With 2 sample: 93%