Anti-FABP2 antibodies are used in the immunodetection of the protein fatty acid binding protein 2. In humans, the canonical protein has a reported length of 132 amino acid residues and a mass of 15.2 kDa. Its subcellular localization is in the cytoplasm. It is reported to be expressed in the small intestine and at much lower levels in the large intestine. A member of the Fatty-acid binding protein (FABP) protein family, FABP2 is known to be involved with fatty acid metabolism. Synonyms for this target antigen include I-FABP, fatty acid-binding protein, intestinal, fatty acid binding protein 2, intestinal, intestinal-type fatty acid-binding protein, and FABPI. FABP2 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of FABP2 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.