Body composition
Body Fat Percentage
LOINC 41982-0 · %
What it is
Body fat percentage is the share of your body weight that is fat. It gives a fuller picture of body composition than weight or BMI alone.
Why it matters
It helps distinguish fat from muscle, which matters for metabolic and overall health. Healthy ranges differ by sex and age.
What high values can mean
A higher value can indicate excess body fat, linked to metabolic risk, though athletes are interpreted differently.
What low values can mean
A very low value can also carry health risks, especially for hormones and bones.
How to improve it
Strength training, regular activity and balanced eating gradually improve body composition.
Food & lifestyle
Adequate protein, whole foods and resistance exercise help build muscle and reduce excess fat over time.
Preparing for the test
Measured by device (such as a smart scale or body scan); measure under consistent conditions for comparison.
When to talk to a doctor
Discuss body composition with a clinician in the context of your overall health and goals.
Related markers
Sources
- NIH (NCBI)
- American Council on Exercise
Content reviewed on June 26, 2026
Medical disclaimer
This content is for educational purposes only. It is not medical advice and does not diagnose, treat, or prevent any condition. Reference ranges vary between laboratories — always use the range printed on your report and discuss your results with a healthcare professional.
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