Principle of Assay
Nicotinic Acid Adenine Dinucleotide Phosphate ELISA Kit (A7284) employs the competitive enzyme immunoassay technique for the quantitative measurement of Nicotinic Acid Adenine Dinucleotide Phosphate in serum, plasma or other biological fluids. The 96-well microtiter plate has been pre-coated with Nicotinic Acid Adenine Dinucleotide Phosphate antigen. During the incubation, Nicotinic Acid Adenine Dinucleotide Phosphate present in the samples or standards competes with the fixed amount of immobilized Nicotinic Acid Adenine Dinucleotide Phosphate for binding sites on the Biotinylated Anti-Nicotinic Acid Adenine Dinucleotide Phosphate Antibody. The more Nicotinic Acid Adenine Dinucleotide Phosphate present in a sample or standard, the less Biotinylated Anti-Nicotinic Acid Adenine Dinucleotide Phosphate Antibody that binds to the plate. Following incubation, unbound Biotinylated Anti-Nicotinic Acid Adenine Dinucleotide Phosphate 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 Nicotinic Acid Adenine Dinucleotide Phosphate present in each sample or standard. The concentration of Nicotinic Acid Adenine Dinucleotide Phosphate can then be calculated by reading the O.D. absorbance at 450nm in a microplate reader and referring to the standard curve.