Principle of Assay
Human Cross Linked N-Telopeptide Of Type I Collagen ELISA Kit (A2293) employs the competitive enzyme immunoassay technique for the quantitative measurement of human Cross Linked N-Telopeptide Of Type I Collagen in serum, plasma, urine or other biological fluids. The 96-well microtiter plate has been pre-coated with Cross Linked N-Telopeptide Of Type I Collagen antigen. During the incubation, Cross Linked N-Telopeptide Of Type I Collagen present in the samples or standards competes with the fixed amount of immobilized Cross Linked N-Telopeptide Of Type I Collagen for binding sites on the Biotinylated Anti-Cross Linked N-Telopeptide Of Type I Collagen Antibody. The more Cross Linked N-Telopeptide Of Type I Collagen present in a sample or standard, the less Biotinylated Anti-Cross Linked N-Telopeptide Of Type I Collagen Antibody that binds to the plate. Following incubation, unbound Biotinylated Anti-Cross Linked N-Telopeptide Of Type I Collagen Antibody is removed by washing, and an HRP-Avidin 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 Cross Linked N-Telopeptide Of Type I Collagen present in each sample or standard. The concentration of Cross Linked N-Telopeptide Of Type I Collagen can then be calculated by reading the O.D. absorbance at 450nm in a microplate reader and referring to the standard curve.