Anti-hHGFL(S) antibodies enable researchers to detect and measure the hHGFL(S) antigen in biological samples. This target is a reported synonym of the PIK3IP1 gene, which encodes phosphoinositide-3-kinase interacting protein 1. This protein is a reported regulator of hepatic phosphatidylinositol 3-kinase (PI3K) activity. The human version of hHGFL(S) has a canonical amino acid length of 263 residues and a protein mass of 28.2 kilodaltons, although 5 isoforms have been identified. It is reported to be localized in the cell membrane of cells.