Objective:To develop an amplified luminescent proximity homogeneous assay linked immunosorbent assay(AlphaLISA)method for simultaneous determination of clenbuterol(CLB)and ractopamine(RAC)in animal tissues. Methods:The samples were subjected to enzymatic extraction with β-glucuronidase/sulfatase and ammonium acetate,degreased with n-hexane,and filtrated with a filter membrane. Then the filtrate underwent reactions with biotinylated antigen,antibody,donor beads,and acceptor beads;subsequently AlphaLISA was u...