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Bone densitometry is a test that quickly and accurately measures the density of bone.
It is used primarily to detect osteopenia or osteoporosis, diseases in which the bone's mineral content and density are low and the risk of fractures is high. This test has become the gold standard for diagnosis and follow-up of osteoporosis. Measurements are usually made at the spine, hip, or forearm and are noninvasive, quick, and painless and utilize a minimal amount of radiation. Insurance also covers this test for qualified Medicare beneficiaries. In healthy bone, there is a balance between the breakdown of old bone tissue and the manufacture of new, replacement material.