| Description | Radioimmunoassay (RIA) for the determination of Free Testosterone in human serum. For research use only, not for use in diagnostic procedures. | Solid phase sandwich ELISA for the determination of human ANGPTL2 in serum, EDTA-plasma and cell culture supernatant. For research use only, not for use in diagnostic procedures._x000D_ | Enzyme linked immunosorbent assay (ELISA) for the determination of antibodies directed against human spermatozoa in serum. For research use only, not for use in diagnostic procedures. | Solid phase enzyme immunoassay (ELISA) for the determination of C-Peptide in serum, plasma and urine. For research use only, not for use in diagnostic procedures. | Enzyme immunoassay (ELISA) for the determination of soluble human leptin receptor (sLEP-R) in human serum or plasma. For research use only, not for use in diagnostic procedures. |