Urine culture does not detect Mycobacterium tuberculosis and requires special antacid staining to further confirm the diagnosis, or tuberculin testing or tuberculosis T cytotoxicity testing to further confirm the diagnosis, and does not confirm the diagnosis by urine culture testing. Patients suspected of having tuberculosis are advised to retain urine for centrifugal sedimentation and to retain the bottom sediment for pathological antacid staining, and this needs to be repeated. Sometimes the diagnosis cannot be confirmed in one visit, and further blood tests are required, including a blood sedimentation test, a tuberculosis antibody test and a tuberculosis T-cell toxicity test, to determine the presence of Mycobacterium tuberculosis. A subcutaneous tuberculin test of the forearm is also required to determine the presence of Mycobacterium tuberculosis. If necessary, a chest X-ray or chest CT is even required to determine the presence of primary or secondary tuberculosis, so a comprehensive examination is required to confirm the diagnosis of tuberculosis.