| Description | Enzyme immunoassay (ELISA) for the determination of Tryptophan in urine, serum, and plasma. For research use only, not for use in diagnostic procedures._x000D_ | Radioimmunoassay (RIA) for the determination of chromogranin A (CGA) in human serum or plasma. For research use only, not for use in diagnostic procedures. | Solid phase sandwich enzyme-linked immunosorbent assay (ELISA) for the determination of DPP4 / CD26 in human serum, EDTA-plasma, urine, and CSF. For research use only, not for use in diagnostic procedures. | Competitive enzyme immunoassay for the quantitative measurement of Estradiol in serum or plasma (EDTA, lithium heparin, or citrate plasma). 510(k) Exempt, can be used for in-vitro diagnostics. | Enzyme-linked immunosorbent assay (ELISA) for the determination of IgG class antibodies against Schistosoma mansoni in human serum or plasma (citrate). FDA exempt, can be used for in-vitro diagnostics. |