Bone Density Test: Who Needs It and How Often?
By Susan McQuillan
Reviewed by QualityHealth's Medical Advisory Board
Bone densitometry, or bone density testing, uses low energy x-rays to precisely measure the mineral content of the bones in your arms, hips, and spine, from which your doctor can determine their thickness and strength. The test lasts only 15 to 20 minutes, during which time you will have to lay still on your back with your arms at your sides.
The results will tell you if you have normal bone mineral density (BMD), osteopenia, which is thinning bones, or osteoporosis, which is more advanced thinning of the bones. Bone density tests are also used to determine how well the medication you are taking to prevent or reverse these bone-thinning conditions is working.
https://www.qualityhealth.com/healthy-aging-articles/bone-density-test-who-needs-it-how-often
