For the quantitative determination of human Interferon beta in serum, urine, cell culture supernates, tissue homogenates, and cerebrospinal fluid (CSF). Sensitivity: 7.8pg/ml Detection Range: 31.25-2000pg/ml Specificity: This assay has high sensitivity and excellent specificity for detection of human IFN-beta. No significant cross-reactivity or interference between human IFN-beta and analogues was observed. Assay Principle: This assay employs the quantitative sandwich enzyme immunoassay technique. Antibody specific for IFN-beta has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any IFN-beta present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for IFN-beta is added to the wells. After washing, avidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of IFN-beta bound in the initial step. The color development is stopped and the intensity of the color is measured. Kit Components: Microtiter Strips, 1x96 wells Standard (Freeze dried), 2xvial Biotin-antibody (100X), 1x120ul HRP-avidin (100X), 1x120ul Biotin-antibody Diluent, 1x15ml HRP-avidin Diluent, 1x15ml Sample Diluent, 1x50ml Wash Buffer (25X), 1x20ml TMB Substrate, 1x10ml Stop Solution: 1x10ml Storage and Stability: Store all kit components at 4C. Stable for 6 months after receipt. Once opened, the kit is stable for 1 month providing this is within the expiration date of the kit. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
