RESPIRATORY
OLD TUBERCULOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The most appropriate specimen is sputum.
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The causative organism grows well on blood agar.
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Acid fast staining is a diagnostic method.
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Full Blood Picture is diagnostic.
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Mantoux test negative exclude diagnosis
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Detailed explanation-1: -The acid-fast stain is a laboratory test that determines if a sample of tissue, blood, or other body substance is infected with the bacteria that causes tuberculosis ( TB ) and other illnesses.
Detailed explanation-2: -Acid-fast staining and culture for mycobacteria remain at the core of any diagnostic algorithm with the sensitivity of 20-70% and specificity of 95-98% for AFB microscopy and the sensitivity of 95% and the specificity of 98% for culture based diagnosis.
Detailed explanation-3: -The Mantoux tuberculin skin test (TST) or the TB blood test can be used to test for M. tuberculosis infection.
Detailed explanation-4: -Your doctor may use an acid-fast bacteria (AFB) stain test to see if you have a lung disease like tuberculosis (TB). In addition to showing tuberculosis, an AFB stain can also show if you have another kind of mycobacterial infection like leprosy or a TB-like disease that can affect people with HIV/AIDS.