Anti-troponin C type 2 (fast) antibodies enable researchers to detect and measure the troponin C type 2 (fast) antigen in biological samples. This target is a reported synonym of the TNNC2 gene, which encodes troponin C2, fast skeletal type. This protein is known to function in muscle contraction, among other biological roles. The human version of troponin C type 2 (fast) has a canonical amino acid length of 160 residues and a protein mass of 18.1 kilodaltons. It is reported to be notably expressed in the skeletal muscle. Other names for this target antigen include CFAP85, CMYP15, and FAP85.