Principle of Assay
Mouse Immunoglobulin Isotyping ELISA Kit (A246961) is a 3 hour qualitative Enzyme-Linked Immunosorbent Assay (qELISA) designed for the in vitro quantitative determination of mouse Immunoglobulin Isotyping in serum, plasma, tissue homogenates, and other biological fluids. A 96-well microtiter plate has been pre-coated with an antibody specific for Immunoglobulin Isotyping. Standards and samples are added to the wells, where Immunoglobulin Isotyping binds to the immobilized capture antibody. Following incubation, unbound components are removed by washing and a biotinylated detection antibody specific for Immunoglobulin Isotyping is added to the wells. The detection antibody binds the captured Immunoglobulin Isotyping 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 Immunoglobulin Isotyping captured in each well. The concentration of Immunoglobulin Isotyping is calculated by reading the absorbance at 450 nm and comparing the values with the standard curve.