When you say they told you "nothing else was available, " were they referring to the CTx tests? There have been discussions on this website from others, including myself, about trying to obtain bone turnover marker tests such as CTx. In addition to others who may reply, try searching "bone marker turnovers," and I hope you find some additional information.

Unless you are lucky to have found a doctor, typically an endocrinologist, who is forward thinking about the use of these tests, you may have to make your case to your doctor and see if they are willing to order them. I think some people have ordered these tests on their own from independent labs.