SpecificityThis assay has high sensitivity and excellent specificity for detection of EP-4. No significant cross-reactivity or interference between EP-4 and analogues was observed. NOTE: Limited by current skills and knowledge, it is impossible for us to complete the cross-reactivity detection between EP-4 and all the analogues, therefore, cross reaction may still exist in some cases.
Intended UseHuman HE 4 ELISA Kit allows for the in vitro quantitative determination of HE 4 , concentrations in serum, Plasma , tissue homogenates and Cell culture supernates and Other biological fluids.
StorageFor 5-7days:Store the whole kit at 4℃
For a Long time :Store the Substrate at 4℃, other reagent should store at -20℃.
Product Description specificalPrinciple of the assay: EP-4 ELISA kit applies the competitive enzyme immunoassay technique utilizing a monoclonal anti-EP-4 antibody and an EP-4-HRP conjugate. The assay sample and buffer are incubated together with EP-4-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 EP-4 concentration since EP-4 from samples and EP-4-HRP conjugate compete for the anti-EP-4 antibody binding site. Since the number of sites is limited, as more sites are occupied by EP-4 from the sample, fewer sites are left to bind EP-4-HRP conjugate. A standard curve is plotted relating the intensity of the color (O.D.) to the concentration of standards. The EP-4 concentration in each sample is interpolated from this standard curve.