@windyshores, Your baseline CTX may not be accurate due to blood collecting time and morning food. According to what is known about circadian and food effects on CTX, your baseline CTX might have been higher than 324. Also it didn’t appear that you had btms tested during anabolic phase of tymlos so the btms at 16-18mo of tymlos might be at the tail end of therapy. These might explain your earlier btm results? Wish you had btms tested at 3, or6 or 12 mo of tymlos. Despite all this, you had such a wonderful Dexa results, a true success story of tymlos! Then your btms readings during evenity is most perplexing. No pattern for CTX, or P1NP. Please keep us posted of your next Dexa if you could. It will be interesting to see how it comes out.