| Description | Enzyme linked immunosorbent assay (ELISA) for the determination of human IgG antibodies in serum or plasma directed against Helicobacter pylori. For research use only, not for use in diagnostic procedures. | Radioimmunoassay (RIA) for the determination of human Complement C4a des Arg in human plasma. For research use only, not for use in diagnostic procedures. | Solid phase, non-competitive immunoassay (ELISA) for the determination of soluble cytokeratin 19 fragments in human serum. 510(k) cleared, can be used 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. |