Acid-Resistant Bacteria examination is a procedure to detect bacteria that cause tuberculosis (TB). TB bacteria can live in an acidic environment, so examination of these bacteria is known as acid resistant bacteria. Acid-Resistant Bacteria examination is carried out by examining the presence of bacteria in various organs of the body, mainly through examination of sputum samples, considering that tuberculosis (TB) most often attacks the lungs. In addition to examining sputum samples, smear examination can also use blood, stool, urine, and bone marrow samples to see TB infection outside the lungs. This article will discuss smear examination with sputum samples. If the patient cannot expel phlegm from the respiratory tract, the patient can undergo a bronchoscopy procedure to take sputum samples. Acid Resistant Bacteria Examination Indications Acid Resistant Bacteria examination is performed on someone suspected of having tuberculosis (TB or TB) infection. Symptoms can be: Chronic