Anti-FGA antibodies are used in the immunodetection of the protein fibrinogen alpha chain. In humans, the canonical protein has a reported length of 866 amino acid residues and a mass of 95 kDa. It has been described to be a secreted protein. Up to 2 different isoforms have been reported for this protein. It is notably expressed in blood plasma. FGA is known to be involved with adaptive immune responses and cell matrix adhesion. Post-translational modifications have been described, including O-glycosylation, N-glycosylation and phosphorylation. The FGA gene has been associated with the disease, Congenital afibrinogenemia. Synonyms for this target antigen include Fib2 and fibrinogen, A alpha polypeptide. FGA gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. Over 100 citations in the literature describe the use of FGA antibodies in research. Western Blot is a widely used application for these antibodies. ELISA, Immunofluorescence, and Immunohistochemistry are also common applications.