Immunoassay using chemical or immunochemical binding of analyte to a solid phase carrying antibody and the immunochemical binding of a second (labelled) reagent to the analyte.
Note: This is one of the most common assays in clinical practice.
Source:
PAC, 2018, 90, 1121. 'Terminology of bioanalytical methods (IUPAC Recommendations 2018)' on page 1142 (https://doi.org/10.1515/pac-2016-1120)