The exam should be done at 06:00, because for culture, it is the gold standard for the diagnosis of TB and three consecutive sputum samples are needed, each collected at intervals of 8 to 24 hours, with at least one sample at the beginning of the exam.
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.
Acid-fast bacteria, also known as acid-fast bacilli or simply AFB, are a group of bacteria sharing the characteristic of acid fastness. Acid fastness is a physical property that gives a bacterium the ability to resist decolorization by acids during staining procedures.
Learn more about acid-fast bacteria (AFB) in brainly.com/question/13216375
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