SPUTUM EXAMINATION (FLUID) AFB

The Sputum Examination (Fluid) AFB test is a laboratory test used to detect Acid-Fast Bacilli (AFB), primarily Mycobacterium tuberculosis, the bacteria responsible for tuberculosis (TB). In this test, a sample of body fluid such as pleural fluid, ascitic fluid, or cerebrospinal fluid (CSF) is examined under a microscope and, when required, cultured to identify the presence of AFB. This test plays an important role in diagnosing extrapulmonary tuberculosis, where the infection occurs outside the lungs.

The test is commonly recommended for individuals with suspected tuberculosis involving the lungs, abdomen, brain, or other body organs. It helps doctors confirm TB infection, especially in patients with persistent fever, unexplained weight loss, night sweats, fluid accumulation, or other symptoms suggestive of extrapulmonary tuberculosis. The results are interpreted along with clinical findings, imaging studies, and other laboratory investigations to ensure an accurate diagnosis and timely treatment.