immunosorbent Definition

relating to or using a substrate consisting of a specific antibody or antigen chemically combined with an insoluble substance (such as cellulose) to selectively remove the corresponding specific antigen or antibody from solution

an in vitro method for quantifying an antigen or antibody concentration in which the test material is immobilized on a surface and exposed either to a complex of an enzyme linked to an antibody specific for the antigen or an enzyme linked to an antigen specific for the antibody followed by reaction of the enzyme with a substrate to yield a colored product corresponding to the concentration of the test material —called also ELISA