Principle of Assay
Human SEC23B ELISA Kit (A74984) is a 4 hour sandwich Enzyme-Linked Immunosorbent Assay (sELISA) designed for the in vitro quantitative determination of human SEC23B in serum, plasma, tissue homogenates, and other biological fluids. A 96-well microtiter plate has been pre-coated with an antibody specific for SEC23B. Standards and samples are added to the wells, where SEC23B binds to the immobilized capture antibody. Following incubation, unbound components are removed by washing and a biotinylated detection antibody specific for SEC23B is added to the wells. The detection antibody binds the captured SEC23B to form an antibody-antigen-antibody sandwich complex. After further incubation and washing, HRP-Streptavidin conjugate is added to the wells. TMB substrate solution is then added to visualize the HRP enzymatic reaction. This produces a blue-coloured product that changes to yellow following addition of acidic stop solution. The intensity of the yellow colour is directly proportional to the amount of SEC23B captured in each well. The concentration of SEC23B is calculated by reading the absorbance at 450 nm and comparing the values with the standard curve.