A sputum smear is positive for acid-fast bacilli. Which statement is most accurate?

Question

Accepted Answer

보기 1: The smear supports the presence of acid-fast organisms but does not by itself identify Mycobacterium tuberculosis; molecular testing and culture are needed as appropriate

AFB microscopy is rapid but is not species-specific and does not provide drug susceptibility. Molecular testing can rapidly support identification, while culture remains important for confirmation and additional characterization.

Answer

보기 2: The smear definitively identifies drug-susceptible M. tuberculosis

Answer

보기 3: A positive smear makes culture unnecessary

Answer

보기 4: The finding proves that only nontuberculous mycobacteria are present

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A sputum smear is positive for acid-fast bacilli. Which statement is most accurate?

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