dcsimg Bone Mass Measurement: What the Numbers Mean

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Bone Mass Measurement: What the Numbers Mean

Last published 06/2015

Please note that online information may be more recently updated than printed materials.

This fact sheet contains information about bone mineral density testing used to identify osteoporosis, determine fracture risk, and measure an individual's response to osteoporosis treatment. It discusses the dual-energy x-ray absorptiometry (DXA) test and explains the resulting T-score and Z-score measurements. In addition, recommendations for which individuals should be tested are described.

NIH Publication No. 15-7877-E

Length: 4 pp.

Intended Audience:

  • General public
  • For medical & health professionals to share with patients

Quantity that can be ordered: up to 1 copy

This publication is in the public domain. It can be reproduced.

Size: 8 1/2 x 11

Language: English


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