The results are either an acid-fast stain, or a partial or modified acid-fast stain. The type of results depends on the bacteria being tested. Sputum, or phlegm, is often used to test for ...

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 ...