| Description | Enzyme immunoassay (ELISA) for the determination of human IgM antibodies directed against Enteroviruses in serum or plasma (EDTA, citrate, heparin). For research use only, not for use in diagnostic procedures. | Enzyme Immunoassay (ELISA) for the determination of Gamma-aminobutyric acid (GABA) in human plasma, serum, and urine. For research use only, not for use in diagnostic procedures. | Enzyme immunoassay (ELISA) for the direct quantitative determination of Pregnenolone in human serum. FDA exempt, for in vitro diagnostic use only. | Immunoradiometric assay (RIA) for the determination of human prolactin (PRL) in serum and plasma. FDA exempt, can be used for in-vitro diagnostics. | Enzyme immunoassay (ELISA) for the determination of Tryptophan in urine, serum, and plasma. For research use only, not for use in diagnostic procedures._x000D_ |