@hello1234 thank you. You might want to get Dr. Keith McCormick's recent book "Great Bones" at the library or online. Dr. Ben Leder from MGH also has an excellent video about Sequencing and Combinations of meds online.

CTX measures bone turnover, which is targeted by bisphosphonates, Prolia and, to a lesser degree, Evenity.

P1NP assesses bone formation and is especially relevant for Tymlos, Forteo and Evenity. Good luck!