Anti-CSHL1 antibodies are used in the immunodetection of the protein chorionic somatomammotropin hormone like 1. In humans, the canonical protein has a reported length of 222 amino acid residues and a mass of 25.4 kDa. It has been described to be a secreted protein. Up to 4 different isoforms have been reported for this protein. It is notably expressed in the pituitary gland and placenta. A member of the Somatotropin/prolactin protein family, CSHL1 is believed to be a novel gestational hormone required to compensate for absence of other members of the GH/CS cluster during gestation. Synonyms for this target antigen include CSHP1, CSL, GHB4, hCS-L, chorionic somatomammotropin CS-5, and CS-5. Some CSHL1 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunocytochemistry, and Immunohistochemistry are also common applications.