Source:http://linkedlifedata.com/resource/umls/id/C0474643
CSP: determination of the concentration of an antibody relative to antigens in a sample by adding a standard solution to a test sample and calculating the composition from the end point.,NCI: Concentration in serum of the antibody that recognizes a particular epitope expressed as the reciprocal of the highest serum dilution that produces the specific positive immunologic reaction in an appropriate test system.