![]() ![]() One standard deviation is equal to a 10–12% difference in bone mass. The manufacturers of the DXA machines have programmed them to use a formula to compute these values. The score that you receive from your bone density (BMD or DXA) test is measured as a standard deviation from the mean. The results for the entire population will be distributed around an average score (the mean).Ī T-score is a standard deviation - a mathematical term that calculates how much a result varies from the average or mean. A bone density test is like any other medical test or measurement. The T-score on your bone density report shows how much your bone mass differs from the bone mass of an average healthy 30 year old adult. ![]()
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