Anti-LST3 antibodies enable researchers to detect and measure the LST3 antigen in biological samples. This target is a reported synonym of the SLCO1B3 gene, which encodes solute carrier organic anion transporter family member 1B3. This protein is known to function in the transport of ions, among other biological roles. The human version of LST3 has a canonical amino acid length of 702 residues and a protein mass of 77.4 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the cell membrane of cells and notably expressed in the liver. LST3 is a member of the Organo anion transporter (TC 2.A.60) protein family.