Ready-to-use ELISA kits are available for the detection of Cal1, an alias of the protein, calcitonin related polypeptide alpha. The official gene symbol is CALCA. The protein, with a mass of 13.9 kDa and length of 128 residues, is reported to be secreted. It is a member of the Calcitonin family and may be known by other names, including: katacalcin, calcitonin/calcitonin-related polypeptide alpha, calcitonin 1, alpha-type CGRP, calcitonin gene-related peptide 1, and calcitonin, and CGRP.