I read another article, can't find it, that said lower kidney function (which I have) can affect some of these tests and other tests were suggested; calcium, BSAP (bone specific phosphatase), PTH, TRAP (better than CTX for this situation?) and BALP (the latter two are types of phosphatase). I can't read my writing 🙂 but they are all google-able.

Food raises the CTX as does a later time. My pre-treatment value was 324 at 10:30 after breakfast and other values during treatmen w/Tymlos were 165 and 186 and after one Evenity 145, all fasting and at 9am. Should be even earlier but aiming for consistency so as to compare. I wish I had a fasting 9am baseline!! It's all about comparisons.