Objective To develop and verify a double antigen sandwich ELISA kit for Yersinia pestis F1 antibody. Methods The double antigen sandwich ELISA kit for Y. pestis F1 antibody was developed using purified F1 antigen as coating antigen and HRP-labeled F1 antigen as enzyme labeled antigen. Three batches of kits were prepared,and internal reference was set up. The kit was verified for precisions in intraand inter-assays,sensitivity,specificity,accuracy and stability. Results The optimal concentration of F1 antige...