title: A variation of the radioimmune assay.
abstract: A novel method of radioimmune assay is described. It departs from conventional assays in that the radioiodine is reacted with protein following, rather than before, the antigen-antibody reaction. Using a BSA/anti-BSA system, the assay can detect antigen concentrations down to approximately 100 ng/ml.
mesh_terms: D000906:Antibodies / Q000032:analysis*; D000937:Antigen-Antibody Reactions; D008954:Models, Biological; D011863:Radioimmunoassay / Q000379:methods*; D012710:Serum Albumin, Bovine / Q000276:immunology
chemical_list: D000906:Antibodies; D012710:Serum Albumin, Bovine