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Upper Body Lean Appendicular Mass: What It Measures

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All NiaHealth tests are processed in Canadian-certified labs, which are highly trusted by the medical community for their accuracy and reliability. Blood and urine samples are collected by licensed medical professionals and processed using state-of-the-art equipment. NiaHealth is SOC2 Type 2 certified.

Upper body lean appendicular mass is the amount of lean tissue, mostly muscle, in your arms and upper body, adjusted for your size. It is measured by DEXA and helps describe your strength potential in the upper body. Tracking it over time can show changes with training or aging.

Available as an add-on

Upper Body Lean Appendicular Mass is part of our DEXA Body Scan add-on, starting from $120.

Nurse Practitioner reviewed

Canadian-certified labs

SOC2 Type 2 certified

Why it matters

Reference ranges

Tanya ter Keurs
Clinically reviewed by  
Tanya ter Keurs
, NP · Last reviewed  
2026-08-05

This information is educational and does not replace medical advice, diagnosis, or treatment. Your results should be interpreted with a qualified healthcare professional in the context of your health history.