@debsinwa this (fractures, sorry to hear that) changed things. I was puzzled by your high ctx at this stage of forteo. After a fracture, btms usually increase. And the degree and length of the increase depend on the size of the bone, the bmd of the fractured bone, the surface of the factured bone, the need for surgery and the degree of immobilization. So your btms results might have been influenced by the fractures. Most studies usually observe btms after a fracture for up to 1 year after fractures.

@sallyj2 ctx and p1np usually go in tandem during antiresorptive or anabolic therapy, due to coupling effect. In anabolic therapy, they are bit trickier to read.