Immunoassays are a technology which combines the principle of chemistry and immunology to enable scientific tests.
Estapor® microspheres are used passively in agglutination to detect antibodies or antigens.
For this application, uniform microspheres (white, dyed, or fluorescent) with different surfaces (plain, COOH, NH2, CH2Cl) and sizes (0.25-1.00 µm) are required.
Antigens or antibodies are fixed on an inert support like Estapor® Microspheres followed by addition of the sample. If the sample contains specific antibodies or antigens, an antigen-antibody reaction occurs.
The presence (a) or absence (b) of visible agglutination can be examined immediately after removing the plastic card test from the rotator.