This kit was based on Competitive-ELISA detection method. The microtiter plate provided in this kit has been pre-coated with NA/NE. During the reaction, NA/NE in the sample or standard competes with a fixed amount of NA/NE on the solid phase supporter for sites on the Biotinylated Detection Antibody specific to NA/NE. Excess conjugate and unbound sample or standard are washed from the plate, and HRP-Streptavidin (SABC) is added to each microplate well and incubated. Then TMB substrate solution i