Complement binding test

The complement fixation test (CFT) is a test that uses an immunohemolytic mechanism as an indicator system to detect another reaction system antigen or antibody. As early as 1906, Wasermann applied it to the diagnosis of syphilis, the famous Fahrenheit reaction. This traditional test has been continuously improved. In addition to being used for infectious disease diagnosis and epidemiological investigations, it is also used in the detection and analysis of some autoantibodies, tumor-associated protozoa, and HLA.