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Body composition
DEXA lean mass
Clinical biomarkerImagingDEXAkg
An imaging-derived estimate of lean soft tissue mass.
What it measures
Regional and whole-body lean mass estimated by dual-energy X-ray absorptiometry.
Why it matters
Useful for body-composition and sarcopenia-related assessment when combined with function.
How to interpret it
Interpret with height/body size, sex, age and functional measures.
Important limitations
Lean mass is not equivalent to muscle quality or strength.
Evidence status
Clinical biomarker
Established body-composition measurement; aging relevance is strongest when paired with function.
Research & guidance
Original papers, validation studies, reviews and clinical guidance connected to this measurement.
For education and evidence exploration, not diagnosis or individualized medical advice.