Anti-SECTM1 antibodies are used in the immunodetection of the protein secreted and transmembrane 1. In humans, the canonical protein has a reported length of 248 amino acid residues and a mass of 27 kDa. Its subcellular localization is in the cell membrane and is secreted. It is notably widely expressed in many tissue types. A member of the SECTM protein family, SECTM1 is suspected to be involved in thymocyte signaling. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include SECTM, secreted and transmembrane protein 1, type 1a transmembrane protein, and K12. Some SECTM1 antibodies may have been used in research and have associated citations. ELISA is a widely used application for these antibodies. Western Blot, Immunofluorescence, and Immunohistochemistry are also common applications.