Same here with the hypothyroidism (Hashimoto's). My first addressing of osteoporosis (-2.5) was by my primary care doctor, and the Rx was for Fosamax. I wouldn't expect her to know about the bone markers, but I imagine she should/could have known about the relationship between low thyroid and bisphosphonates treatment. What bothers me is that the endocrinologist she referred me to later should have been aware of BOTH of these things instead of zeroing straight in on Prolia and citing insurance as the probable reason for that path. I hesitate to go back to her at all, but on the other hand I feel I haven't given her the full opportunity to bring things around. I was not as knowledgeable then as I am now. As far as the DEXA, I have new insurance now and am told they will cover it in my age group (over 50) in full as long as the doctor supports it. Good direction on the DEXA comparison, thanks!