Anti-VWA5B1 antibodies are used in the immunodetection of the protein von Willebrand factor A domain containing 5B1. In humans, the canonical protein has a reported length of 1220 amino acid residues and a mass of 133.8 kDa. It has been described to be a secreted protein. Up to 5 different isoforms have been reported for this protein. It is notably expressed in the testis. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include von Willebrand factor A domain-containing protein 5B1. VWA5B1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Immunocytochemistry is the most common application for the VWA5B1 antibodies listed below. Immunofluorescence and Immunohistochemistry are also common applications.