T-cell spot test for Mycobacterium tuberculosis test is T-cell test for tuberculosis infection, the principle is to detect tuberculosis effector T lymphocytes through enzyme-linked immunospot technology, which is one of the standards for the detection of Mycobacterium tuberculosis infection, and it is mainly used for the auxiliary diagnosis of tuberculosis or latent period. 1. Positive test result: Positive result suggests the possibility of Mycobacterium tuberculosis infection; however, it can not be used as the basis for the diagnosis of tuberculosis alone, and needs to be further combined with the results of other tests to make a comprehensive judgment, such as chest radiographs or CT of the lungs and so on. 2. Negative test results: (1) The patient is not infected with Mycobacterium tuberculosis. (2) When the TB patient has immune insufficiency, such as tumor or AIDS infection, the test result will also be negative. (3) Different stages of tuberculosis infection, such as before cellular immunization, the test will also show negative results. When some of the test results are abnormal or when you are not feeling well, you should consult the relevant departments in time, complete the relevant examinations, and carry out standardized treatment after the professional doctor combines the patient’s condition and the results of auxiliary examinations.