Principle of Assay
Mouse Polymeric Immunoglobulin Receptor/PIGR ELISA Kit (A5796) employs the sandwich enzyme immunoassay technique for the quantitative measurement of mouse Polymeric Immunoglobulin Receptor/PIGR in serum, plasma, tissue homogenates or other biological fluids. An antibody specific for Polymeric Immunoglobulin Receptor/PIGR has been pre-coated onto a 96-well microtiter plate. The standards and test samples are added into the wells and the Polymeric Immunoglobulin Receptor/PIGR present in each sample is bound to the wells by the immobilized antibody. Following incubation, the wells are washed and then incubated with Biotinylated Anti-Polymeric Immunoglobulin Receptor/PIGR Antibody, which binds the captured Polymeric Immunoglobulin Receptor/PIGR present in each well. Following incubation, unbound biotinylated detection antibody is removed by washing, and an HRP-Avidin conjugate is added to the wells and the microtiter plate is incubated. Following incubation and washing, TMB substrate solution is then used to visualize the HRP enzymatic reaction by catalysis to produce a blue-coloured product that changes to yellow after addition of acidic stop solution. The density of yellow is proportional to the amount of Polymeric Immunoglobulin Receptor/PIGR captured in each well. The concentration of Polymeric Immunoglobulin Receptor/PIGR can then be calculated by reading the O.D. absorbance at 450nm in a microplate reader and referring to the standard curve.