@normahorn thank you very much for your reply! Thank you very mucn for the link also. Ive read it and i also have a copy of "great bones". May I ask a few more questions:

*Did you have any bone meds (including estrogen, Evista, bisphosphonates, prolia, or any of the 3 anabolics in the past, or in the distant past (5-10 years ago)?
*What time in the morning did you have your blood drawn, and whats your daily average waking hours?
*Soft fast- does it mean that you had some food prior to test? This might alter ctx results a bit.
*Couple days prior to your tests, did you take collagen or biotin supplements?
*Do you happen to have secondary cause for osteoporosis that you know of?

If information gets too personal, feel free not to disclose here, i understand. Or if you feel appropriate, feel free to pm me, but make sure that you exclude sensitive personal information such as location, name, date of birth or anything that should be kept private.

I have a CTX distribution graph for post menapausal women, but am intrigued how to look at ctx and p1np together. Thanks a lot!