An enzyme immunoassay is any of several immunoassay methods that use an enzyme bound to an antigen or antibody. These may include:
Enzyme-linked immunosorbent assay (ELISA) Enzyme multiplied immunoassay technique (EMIT) Fluorescent enzyme immunoassays (FEIAs) Chemiluminescent immunoassays (CLIAs) Radioimmunoassays (RIAs)