KE00261 is a solid phase sandwich Enzyme Linked-Immuno-Sorbent Assay (Sandwich ELISA). The FAS/CD95 ELISA kit is to be used to detect and quantify protein levels of endogenous FAS/CD95. The assay recognizes human FAS/CD95. An antibody specific for FAS/CD95 has been pre-coated onto the microwells. The FAS/CD95 protein in samples is captured by the coated antibody after incubation. Following extensive washing, another antibody of biotinylated specific for human FAS/CD95 is added to detect the captured human FAS/CD95 protein. For signal development, Streptavidin-HRP is added, followed by Tetramethyl-benzidine (TMB) reagent. Solution containing sulfuric acid is used to stop color development and the color intensity which is proportional to the quantity of bound protein is measurable at 450 nm with the correction wavelength set at 630 nm.