This is a non-invasive test and requires very little preparation. If you are taking calcium supplements, stop taking them for 48 hours before your test. If you are taking any medications for Osteopenia or Osteoporosis, do not take them the day of your test. You can eat and drink normally on the day of the test. Do wear loose clothing that has no metal zippers, metal buttons etc. (or you will need to disrobe).If you wear any kind of metal jewelry, you will need to remove it before the test.
Be sure to tell the technician if you have had any hip or back injury. And since most technicians will measure the hip of your non-dominant hand, it is worth mentioning if you are left handed.