CTX-1 Products

CTX-1, also referred to as either carboxy-terminal cross-linked telopeptide of type 1 collagen or C-terminal end of the telopeptide of type I collagen, is a marker of osteoporosis and bone resorption (1,2). CTX-1 is a common bone turnover marker (BTM) that can easily be measured in the plasma, serum, or urine (1-3). Bone turnover refers to the removal of old bones by resorption followed by generation of new bones (3). CTX-1 is released from intact collagen type 1 by cathepsin K cleavage and can ...