| Description | Radioimmunoassay (RIA) for the determination of 25-hydroxyvitamin D3 and D2 (25-OH-D3 and 25-OH-D2) in serum. 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. | Solid phase sandwich ELISA for the determination of human total GIP in EDTA-plasma and cell culture supernatant. For research use only, not for use in diagnostic procedures. | Solid phase competitive enzyme immunoassay (ELISA) for the determination of total T3 (Triiodothyronine) in human serum or plasma. For research use only, not for use in diagnostic procedures. | Radioimmunoassay (RIA) for the determination of Vasoactive Intestinal Polypeptide (VIP) in human plasma. For research use only, not for use in diagnostic procedures. |