Cambridge University Press: 02 October 2014
Acute and 3-month effects of microcrystalline hydroxyapatite, calcium citrate and calcium carbonate on serum calcium and markers of bone turnover: a randomised controlled trial in postmenopausal women.
2014年經國劍橋大學研究，羥基磷灰石(牛骨粉)提高血鈣濃度低於碳酸鈣和檸檬酸鈣，表示鈣能更有效地進入骨骼而非滯留在血液中。