Anti-deiodinase, iodothyronine, type III antibodies enable researchers to detect and measure the deiodinase, iodothyronine, type III antigen in biological samples. This target is a reported synonym of the DIO3 gene, which encodes iodothyronine deiodinase 3. This protein is known to function in metabolic processes, among other biological roles. The human version of deiodinase, iodothyronine, type III has a canonical amino acid length of 304 residues and a protein mass of 33.9 kilodaltons. It is reported to be localized in the cell membrane of cells. Other names for this target antigen include 5DIII, D3, and DIOIII.