Description
The Alpha-1 Antitrypsin ELISA assay determines human alpha-1-antitrypsin according to the “sandwich”-principle. Alpha-1 Antitrypsin in sample, standard and controls binds to antibodies, which are coated to the microtiter plate. After a washing step a peroxidase labeled detection antibody is added. A second washing step is followed by the addition of the substrate which is converted to a colored product by the peroxidase. The reaction is terminated by the addition of an acidic stop solution. The optical densities are read at 450 nm (against the reference wavelength 620 nm) in a microtiter plate reader. The α-1-AT concentration can be calculated from the standard curve