This is the modern, gold-standard rapid test for Tuberculosis. The Genxpert (also known as CB-NAAT) is a highly sensitive molecular test that directly detects the DNA of the TB bacteria from a sputum (phlegm) sample. Unlike traditional methods, which can take weeks, this test provides a definitive 'yes/no' answer in hours. Crucially, it also simultaneously checks for resistance to Rifampicin, one of the most important TB medications. This test is the key to a fast, accurate diagnosis, ensuring you get on the correct treatment plan immediately.