| Description | Solid phase competitive enzyme immunoassay (ELISA) for the determination of free Thyroxine (fT4) in human serum. For research use only, not for use in diagnostic procedures. | Solid phase sandwich ELISA for the determination of human Angiotensinogen ELISA in serum, EDTA-plasma, urine, or cell culture media. 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. | The Human TPMT (Thiopurine S-methyltransferase) ELISA has been designed for the detection of TPMT in serum, plasma, tissue homogenates and other biological fluids. For research use only, not for use in diagnostic procedures. | Radioimmunoassay (RIA) for the determination of human Testosterone in serum. For research use only, not for use in diagnostic procedures. |