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A 31-year-old female asked:

What is a significant change in t/z scores for osteoporosis? my spine is -8.6% worse... is that a lot for 1 year? femurs change are -0.007% and -0.5%.

1 doctor answer • 1 doctor weighed in
Dr. Alan Feldman
Dr. Alan Feldmananswered
43 years experience
High variability: A significant problem with DEXA scans is the variability both between different machines and within the same center. The reported variability using the same machine on two different days is about 4%. If one tries to compare two different machines (and operators), the variability can be as high as 10-15%. It looks like your spine may be worse, but the femur is unchanged.
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Last updated May 17, 2019

Found in:

Old health›Osteoporosis

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