| Resorption markers | Formation markers |
| Serum C-terminal telopeptide type-I collagen (s-CTX) | Osteocalcin (OC) |
| Urinary N-telopeptide (NTX) | bone-specific alkaline phosphatise (BSAP) |
| Deoxypyridinoline (free and total) | N-terminal and C-terminal pro-peptides of type I procollagen (P1NP, P1CP) |