Hydroxysteroid (11-Beta) Dehydrogenase 3a (HSD11B3A) ELISA Kit: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to 11-Beta-Hydroxysteroid Dehydrogenase Type 3 (HSD11b3). Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to 11-Beta-Hydroxysteroid Dehydrogenase Type 3 (HSD11b3). 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 11-Beta-Hydroxysteroid Dehydrogenase Type 3 (HSD11b3), 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