What's a Bone Density Test?

Dual-energy X-ray absorptiometry is a means of measuring bone mineral density using spectral imaging. Two X-ray beams, with different energy levels, are aimed at the patient's bones. When soft tissue absorption is subtracted out, the bone mineral density can be determined from the absorption of each beam by bone.

How do you prepare for a bone density test?

How should I prepare? On the day of the exam you may eat normally. You should not take calcium supplements for at least 24 hours before your exam. You should wear loose, comfortable clothing, avoiding garments that have zippers, belts or buttons made of metal.

Does a bone density test hurt?

A bone density test is like an x-ray or scan of your body. The test doesn't hurt, and you don't need to do anything to prepare for it. It only takes about 15 minutes.