Antibodies to tuberculosis generally refer to a condition in which the body produces specific antibodies for immune defense after an organ or tissue has been infected with Mycobacterium tuberculosis. Positive TB antibodies are usually associated with exposure to or infection with the bacillus, such as tuberculous pericarditis, tuberculous uveitis, conjunctival tuberculosis, pulmonary tuberculosis, renal tuberculosis, bone tuberculosis, etc., and may also be caused by BCG vaccination. Clinical tests for TB antibodies can be performed by using colloidal gold as a marker for specific blood tests, and the current positive rate of TB antibodies in clinical tests can reach between 80% and 90%. Therefore, if the clinical examination is positive for TB antibodies, it can only be used as one of the reference standards for TB infection, and the diagnosis of the disease needs to be confirmed in combination with other valid test results.