tcue8326 ELISA Kit for Calprotectin (CALPRO)

The microplate provided in this kit has been pre-coated with an antibody specific to S100A8. Standards or samples are then added to the appropriate microplate wells with a biotin-conjugated antibody specific to S100A9. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain calprotectin, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of calprotectin in the samples is then determined by comparing the O.D. of the samples to the standard curve.