Rat NT5C3L ELISA Kit (A78549) employs the competitive enzyme immunoassay technique for the quantitative measurement of rat NT5C3L in serum, plasma, tissue homogenates, and other biological fluids. The 96-well microtiter plate has been pre-coated with NT5C3L antigen. During the incubation, NT5C3L present in the samples or standards competes with the fixed amount of immobilized NT5C3L for binding sites on the Biotinylated Anti-NT5C3L Antibody. The more NT5C3L present in a sample or standard, the less Biotinylated Anti-NT5C3L Antibody that binds to the plate. Following incubation, unbound Biotinylated Anti-NT5C3L Antibody is removed by washing, and an HRP-Streptavidin 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 inversely proportional to the amount of NT5C3L present in each sample or standard. The concentration of NT5C3L can then be calculated by reading the O.D. absorbance at 450nm in a microplate reader and referring to the standard curve.