| Description | Enzyme immunoassay (ELISA) for the determination of f-PSA in human serum. For research use only, not for use in diagnostic procedures. | Radioimmunoassay (RIA) for the determination of human free anti-insulin antibodies (AIA) in serum and plasma. FDA exempt, can be used for in-vitro diagnostics. | 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. | Enzyme immunoassay (ELISA) for the quantitative in vitro diagnostic measurement of free estriol (unconjugated estriol) in serum during the second half of pregnancy. | Radioimmunoassay (RIA) for the determination of human IGFBP-3 in serum, plasma, or other human biological fluids (e.g. follicular fluid, seminal plasma). For research use only, not for use in diagnostic procedures. |
| Assay Time | 1 hr 15 mins (incubation) | 2 hrs, 30 mins (incubation) | 2 hours total incubation time. | 1 hr 30 mins (incubation) | 63 hrs (incubation) |