immunoassay im·mu·no·as·say (ĭm'yə-nō-ās'ā, ĭ-myōō'-)
A laboratory or clinical technique that uses the specific binding between an antigen and its homologous antibody to identify and quantify a substance in a sample. Also called immunochemical assay.
|immunoassay (ĭm'yə-nō-ās'ā, ĭ-my'-) Pronunciation Key
A laboratory technique that identifies and quantifies (usually in minute amounts) a protein such as a hormone or an enzyme, based on its ability to act as an antigen or antibody in a chemical reaction.