PTH and diabetes mellitus: In order to study how diabetes and SGLT2I affect bone via hormones and biomarkers, we tested PINP, a biomarker of bone formation; CTX-I, a biomarker of bone resorption; BALP, a hormone that indicates the level of bone calcification; BGP, a hormone that indicates the level of calcium deposition; and CT and PTH, hormones that affect calcium and phosphate metabolism.