A member asked:

How can i convert bone scan t-scores to z-scores?

3 doctors weighed in across 3 answers

DEXA scores: You should not have to convert t scores to z scores when you receive your DEXA results, which report your bone density. They are statistical terms that tell you where your one density is relative to age-matchednnormal data. Both values are given with the result.

Answered 2/19/2015

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Dr. Thomas Heston answered

Specializes in Family Medicine

Use a chart: There is no formula to convert t-scores to z-scores. 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. The t=score is what is used to diagnose osteoporosis and osteopenia.

Answered 2/19/2015

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Dr. Gerald Mandell answered

Specializes in Nuclear Medicine

Not usually: T scores are for patients over 18 yr and z scores for children under 18 yr. The controls for children are bases on ages, color, and sex. The t scores are compared to other adults. Dexa centers who perform studies on children have software to generate both values. T scores cannot be used accurately for children and z scores not in adults.

Answered 12/9/2013

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