if serum calcium is above normal a osteoprosis patient needs calcium supplement?

Answer 1

However, you should also have your parathyroid glands checked, as they may be functioning improperly, and you should be having your calcium levels monitored periodically by your doctor to make certain that you aren't experiencing hugely elevated calcium levels in your bloodstream and possibly side effects thereof. In a nutshell, yes, because it most likely means that the parathyroid glands are secreting a hormone that leaches calcium out of the bones into the bloodstream. In order to replace the calcium in the bones rather than leaching it out, your body requires more calcium, vitamin D.