Anti-CTR antibodies enable researchers to detect and measure the CTR antigen in biological samples. This target is a reported synonym of the CALCR gene, which encodes calcitonin receptor. This protein is known to function in GPCR signaling pathways and receptor-mediated signaling pathways, among other biological roles. The human version of CTR has a canonical amino acid length of 474 residues and a protein mass of 55.3 kilodaltons, although 6 isoforms have been identified. It is reported to be localized in the cell membrane of cells and notably expressed in the placenta, kidney, and hypothalamus. Other names for this target antigen include CRT and CT-R. Immunohistochemistry is the most common application for the CTR antibodies listed below. ELISA and Immunofluorescence are also common applications.