indirect agglutination

synonym: passive agglutination
https://doi.org/10.1351/goldbook.09678
Agglutination in which antigen is first immobilised artificially onto the particulate surfaces, either by physical adsorption or by chemical and/or immunochemical linkers.
Note: Antigen-loaded particles can be used to detect the presence of the corresponding specific agglutinins in sample. Agglutination results by cross-linking of the antigen-bearing particles onto an extensive antigen-antibody lattice (i.e. in detectable agglutination of the particles).
Source:
PAC, 2018, 90, 1121. (Terminology of bioanalytical methods (IUPAC Recommendations 2018)) on page 1141 [Terms] [Paper]