Mouse C-Type Natriuretic Peptide ELISA Kit (A78536) employs the competitive enzyme immunoassay technique for the quantitative measurement of mouse C-Type Natriuretic Peptide in serum, plasma, tissue homogenates, and other biological fluids. The 96-well microtiter plate has been pre-coated with C-Type Natriuretic Peptide antigen. During the incubation, C-Type Natriuretic Peptide present in the samples or standards competes with the fixed amount of immobilized C-Type Natriuretic Peptide for binding sites on the Biotinylated Anti-C-Type Natriuretic Peptide Antibody. The more C-Type Natriuretic Peptide present in a sample or standard, the less Biotinylated Anti-C-Type Natriuretic Peptide Antibody that binds to the plate. Following incubation, unbound Biotinylated Anti-C-Type Natriuretic Peptide 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 C-Type Natriuretic Peptide present in each sample or standard. The concentration of C-Type Natriuretic Peptide can then be calculated by reading the O.D. absorbance at 450nm in a microplate reader and referring to the standard curve.