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A bone density test may detect osteoporosis or osteopenia. [4] The usual response to either of these indications is consultation with a physician. [4] Bone density tests are not recommended for people without risk factors for weak bones, [5] [4] which is more likely to result in unnecessary treatment rather than discovery of a weakness.
Bone densities are often given to patients as a T score or a Z score. A T score tells the patient what their bone mineral density is in comparison to a young adult of the same gender with peak bone mineral density. A normal T score is -1.0 and above, low bone density is between -1.0 and -2.5, and osteoporosis is -2.5 and lower.
Older women aren't the only ones who need a bone density test. Younger women who have a fracture risk that’s similar to women who are 65 and up should also get tested.
Bone density tests may help prevent expensive reparative treatments. If a doctor says a bone density test is medically necessary, Medicare will typically cover the cost.
The trabecular bone has much higher metabolic activity than the cortical bone and so is affected by age, disease and therapy-related changes earlier and to a greater degree than cortical bone. This means that QCT of the spine has an advantage compared to other bone density tests because earlier changes in bone mineral density may be detected . [1]
The trabecular bone score is a measure of bone texture correlated with bone microarchitecture and a marker for the risk of osteoporosis.Introduced in 2008, [1] its main projected use is alongside measures of bone density in better predicting fracture risk in people with metabolic bone problems.