Enzyme-Linked Immunosorbent Assay Unit

**Semantic type:** Quantitative Concept

**Definition:** A unit for measuring concentration or/and reactivity of a test substance (an antigen or antibody of interest) as defined in the literature reference standard for the particular quantitative enzyme-linked immunosorbent assay method. The enzyme-linked immunosorbent assay unit is used to express potency of immunologically active substances and products, e.g. vaccines.

**Synonyms:** - EL. U - ELISA Unit - ELISA unit - ELISA unit - ELISA unit - [ELU] - [ELU] - [ELU] - enzyme-linked immunosorbent assay unit