Specificity: This antibody recognizes an epitope on the extracellular domain of the gonadotropin releasing hormone (GnRH) receptor or luteinizing hormone receptor (LHCGR). Immunogen: A synthetic peptide consisting of amino acids 1-29 (MANSASPEQNQHCSAINNSI PLMQGNLPY) from the N-terminus of the human GnRH receptor.