Principle of the Assay: AP17 ELISA kit applies the competitive enzyme immunoassay technique utilizing a polyclonal anti-AP17 antibody and an AP17-HRP conjugate. The assay sample and buffer are incubated together with AP17-HRP conjugate in pre-coated plate for one hour. After the incubation period, the wells are decanted and washed five times. The wells are then incubated with a substrate for HRP enzyme. The product of the enzyme-substrate reaction forms a blue colored complex. Finally, a stop solution is added to stop the reaction, which will then turn the solution yellow. The intensity of color is measured spectrophotometrically at 450nm in a microplate reader. The intensity of the color is inversely proportional to the AP17 concentration since AP17 from samples and AP17-HRP conjugate compete for the anti-AP17 antibody binding site. Since the number of sites is limited, as more sites are occupied by AP17 from the sample, fewer sites are left to bind AP17-HRP conjugate. A standard curve is plotted relating the intensity of the color (O.D.) to the concentration of standards. The AP17 concentration in each sample is interpolated from this standard curve.
Principle of the Assay: AP17 ELISA kit applies the competitive enzyme immunoassay technique utilizing a polyclonal anti-AP17 antibody and an AP17-HRP conjugate. The assay sample and buffer are incubated together with AP17-HRP conjugate in pre-coated plate for one hour. After the incubation period, the wells are decanted and washed five times. The wells are then incubated with a substrate for HRP enzyme. The product of the enzyme-substrate reaction forms a blue colored complex. Finally, a stop solution is added to stop the reaction, which will then turn the solution yellow. The intensity of color is measured spectrophotometrically at 450nm in a microplate reader. The intensity of the color is inversely proportional to the AP17 concentration since AP17 from samples and AP17-HRP conjugate compete for the anti-AP17 antibody binding site. Since the number of sites is limited, as more sites are occupied by AP17 from the sample, fewer sites are left to bind AP17-HRP conjugate. A standard curve is plotted relating the intensity of the color (O.D.) to the concentration of standards. The AP17 concentration in each sample is interpolated from this standard curve.