| Description | Radioimmunoassay (RIA) for the determination of Free Testosterone in human serum. For research use only, not for use in diagnostic procedures. | Enzyme immunoassay (ELISA) for the determination of IGFBP-3 in human serum, plasma (heparin), or cerebrospinal fluid. For research use only, not for use in diagnostic procedures. | Radioimmunoassay (RIA) for the determination a-melanocyte stimulating hormone (a-MSH) in human plasma or cerebrospinal fluid. 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. | Enzyme immunoassay (ELISA) for the determination of squamous cell carcinoma (SCC) antigen in serum. For research use only, not for use in diagnostic procedures. |