Anti-progastricsin antibodies are used for the immunodetection of the protein encoded by the PGC gene. In humans, the canonical protein has a reported length of 388 amino acid residues and a mass of 42.4 kDa. It is known to be a secreted protein. Alternative splicing is reported to yield 2 different isoforms for this protein. A member of the Peptidase A1 protein family, it is known to be involved with proteolysis. Other names for this target antigen include PGII, gastricsin, pepsin C, pepsinogen C, pepsinogen group II, preprogastricsin, and PEPC. Gene orthologs have been identified in the mouse, rat, bovine and chimpanzee species. A number of progastricsin antibodies have been mentioned in research publications and have associated citations. ELISA is a widely used application for these antibodies. Western Blot and Immunohistochemistry are also common applications.