. 2013 May 31;7:435–448. doi: 10.2147/DDDT.S31504

Table 1.

Serum biomarkers for osteoporosis

Osteoblastic activity markers	Osteoclastic activity markers
Total or bone specific alkaline phosphatase	Tartrate resistant acid phosphatase (TRAP)
Osteocalcin	C-terminal telopeptide of collagen type I (ICTP)
N- or C-terminal propeptide of protocollagen type 1	β-CrossLaps (β-CTX)
N- or C-terminal propeptide of protocollagen type 1	N-terminal telopeptide of collagen type I (NTX)

Note: Adapted with permission of Elsevier. Original Source: Torres E, Mezquita P, DeLa Higuera M, Fernandez D, Munoz M. Actualizacion sobre la determinacion de marcadores de remodelado oseo. Endocrinol Nutr. 2003;50(6):237–243.133