Anti-TSPAN9 antibodies are used in the immunodetection of the protein tetraspanin 9. In humans, the canonical protein has a reported length of 239 amino acid residues and a mass of 26.8 kDa. Its subcellular localization is in the membrane. It is reported to be expressed in megakaryocytes and platelets. It is a member of the Tetraspanin (TM4SF) protein family. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include NET5, PP1057, new EST tetraspan 5, tetraspan NET-5, transmembrane 4 superfamily member tetraspan NET-5, and NET-5. TSPAN9 gene orthologs have been reported in the mouse, rat, bovine, frog and chimpanzee species. Some TSPAN9 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunofluorescence, and Immunohistochemistry are also common applications.