Immunoassay has undergone different stages, such as radioimmunoassay, fluorescence immunoassay and enzyme-linked immunoassay (ELISA).Chemiluminescence immunoassay (CLIA) is a new stage in the development of immunoassay, which is widely recognized for its environmental protection, rapid and accurate characteristics. clia kits https://www.amerigoscientific.com/clia-kits.html