ChemiLuminescence (referred to as CL) is a new immunological analysis method for detecting trace antigens, antibodies, hormones, enzymes, etc. based on the principle of linear quantitative relationship between the concentration of analytes in the system and the chemiluminescence intensity of the system under certain conditions, and the detection of the chemiluminescence intensity of the system by using instruments. Widely used in infectious diseases, heart diseases, tumors, pregnancy detection, etc.