I had a blood test for a bone turn over rate before a tooth extraction, to determine how fast or slowly I would heal, since I had been on actonel some years ago The dentist said at my rate of 280 I would heal but anyone with bone turn over of 150 or less would have problems
this is the first time such a test was done on me and I'm thinking it might be a better indicator of fracture risk than a BMD test
my test results: CTX 280 ng/L.... CTx 0.28ug/L
notes: post menopausal women with
CTX levels < 400ng/L have low bone turnover



CTx is the c-terminal telopeptite cross-link that is released from the bone collagen matrix as it is degraded by osteoclasts. I have never heard of using it to predict who will heal from a tooth extraction using cutpoints. Can your dentist provide some references? It would be good for the rest of us to read up on it. CTX measures bone resorption, not bone formation, so I don't understand how it would be directly related to healing.
But bone absorption markers tell only how fast old bone is being broken down. If new bone is being made just as fast, or even faster (as in the case of Forteo) a high bone turnover rate does not necessarily mean bone loss. Absent or extremely low values are more of a concern if suppressed for an extremely long time beause it causes old bone to remain and become more brittle.
While most things slow down as we age, and for women who go through the menopause, the one thing that speeds up after menopause is bone reporption and CTX levels will be abnormally high and that is how anti-resoptive medicatons work, by supressing bone turnover to pre-menopausal rates, but not zero.