Listed are ELISA Kits for the detection of Factor XI, an alias name of coagulation factor XI. The human protein, encoded by the gene F11, is 625 amino acid residues long and has a mass of 70,109 daltons. However, there are up to 2 reported isoforms. It is a member of the Peptidase S1 family, Plasma kallikrein subfamily. This protein is reported to have a secreted cellular localization, and is glycosylated. The gene is associated with Factor XI deficiency. For this target protein, ELISA kits with the following species reactivities are available: human, mouse, rat, primate, guinea pig, and other mammalian. This target may also be known as: coagualtion factor XI, plasma thromboplastin antecedent, FXI, and PTA.