| Description | Radioimmunoassay (RIA) for the determination of Vasoactive Intestinal Polypeptide (VIP) in human plasma. For research use only, not for use in diagnostic procedures. | Solid phase sandwich ELISA for the determination of human Aß (1-x) in EDTA-plasma, cerebrospinal fluids, serum, cell culture media or the extract from brain tissue. For research use only, not for use in diagnostic procedures. | Solid phase sandwich ELISA for the determination of BACE1 in human, mouse or rat brain extracts or cultured cell lysate. For research use only, not for use in diagnostic procedures. | The Complement C4d assay is an enzyme-linked immunosorbent assay (ELISA) for the semiquantitative determination of C4d in human plasma. For research use only, not for use in diagnostic procedures. | Radioimmunoassay (RIA) for the determination Vasopressin in plasma or urine. For research use only, not for use in diagnostic procedures. |