Isolation and concentration of an antigen by forming a precipitate with an antibody.
Note: Immunoprecipitation requires that the antibody be coupled to a solid substrate at some point in the procedure.
Source:
PAC, 2018, 90, 1121. 'Terminology of bioanalytical methods (IUPAC Recommendations 2018)' on page 1140 (https://doi.org/10.1515/pac-2016-1120)