Sorry for the delayed answer … My Endo had me do the following: Urine Crosslinked N-Telopeptide, c-Terminal Collagen Crosslinks, Osteocalcin and Vitamin D. His comment was that the results “tell us that the Reclast was effective in decreasing bone turnover”. I’ll do a Dexa in either 1 1/2 or 2 years (after that first infusion date) and see if my numbers are holding (and the markers are still good) and decide then if another infusion is needed then, or monitor and wait awhile.