Anti-serine peptidase inhibitor Kazal type 14 (putative) antibodies are used for the immunodetection of the protein encoded by the SPINK14 gene. In humans, the canonical protein has a reported length of 97 amino acid residues and a mass of 11.1 kDa. It is known to be a secreted protein. It is believed to be a serine protease inhibitor. Post-translational modifications have been described, including glycosylation. Other names for this target antigen include serine protease inhibitor Kazal-type 14 and Kazal type serine protease inhibitor 5-like 2. Gene orthologs have been identified in the mouse, rat and chimpanzee species.