Bone mineral density test
Alternate Names : BMD test, Bone density test, Bone densitometry, DEXA scan, DXA, Dual-energy x-ray absorptiometry
Normal Values
The results of your test are usually reported as a "T score" and "Z score." - The T score compares your bone density with that of healthy young women.
- The Z score compares your bone density with that of other people of your age, gender, and race.
In either score, a negative number means you have thinner bones than the standard. The more negative the number, the higher your risk of a bone fracture.
A T score is within the normal range if it is -1.0 or above.
What do Abnormal Results Mean?
Bone mineral density testing does not diagnose fractures. However, along with other risk factors you may have, it helps predict your risk of having a bone fracture in the future. Your doctor will help you understand the results. - A T score between -1 and -2.5 indicates the beginning of bone loss (osteopenia).
- A T score below -2.5 indicates osteoporosis.
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