Any one else's Doc. Ordering a Bone Scan?
Because of our malabsorption issues we MUST take calcium. Recent studies have shown that we should probably consider taking up to 1800 mg. of calcium a day. If you're not getting enough calcium from supplements your body will leech it from your bones. This makes the bones have a lacy-like consistency, much easier to break.
Your doctor is being very diligent in having you go for the BDT, my PCP is having me go for a DEXA scan in March. It is a little different than the BDT but I am 53. Have old bones, LOL.
Good luck!