Fluorescent Enzyme Immunoassay

**Semantic type:** Laboratory Procedure

**Definition:** An assay technique that uses enzymes, which when bound to the substrate transform into a fluorescent product, to detect the presence of a substance, usually an antigen.

**Synonyms:** - ELFA - Enzyme-linked Fluorescence Assay - Enzyme-linked Fluorescent Immunoassay - FEIA - FLUORESCENT ENZYME IMMUNOASSAY