title: An ELISA for pregnancy-associated plasma protein A.
abstract: An enzyme-linked immunoassay for pregnancy-associated plasma protein A is described. The assay is sensitive (7.6 IU/l) and precise (overall CV varied between 8.9% and 10.8%). Recovery was 100% over the working range. Parallel behaviour was observed between the International Reference Preparation 78/610 and pregnancy serum, thus allowing calibration of a laboratory standard pool against IRP 78/610.
mesh_terms: D000936:Antigen-Antibody Complex; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D008832:Microchemistry; D011247:Pregnancy; D011257:Pregnancy Proteins / Q000032:analysis*; D011266:Pregnancy-Associated Plasma Protein-A / Q000032:analysis*
chemical_list: D000936:Antigen-Antibody Complex; D011257:Pregnancy Proteins; D011266:Pregnancy-Associated Plasma Protein-A