Acid-fast Bacillus Stain (AFB)

Negative for acid-fast organisms

. Sputum specimen sent in a sterile collection cup. Gastric
washings/aspirates, urine, cerebral spinal fluid (CSF), other body
fluids, or tissue samples may also be tested.
■ Sputum samples should be induced in the early morning to
obtain the best specimen.
■ Collect specimens for 3 days.
■ Tests for Mycobacterium tuberculosis, atypical mycobacteria,
or other acid-fast bacteria. See Tuberculosis Culture.