September 24, 2026
Normal Creatinine Levels by Age and Sex
Why creatinine reference ranges vary with age, sex and muscle mass.
Medically Reviewed By
Artemis Kidney Hospital Nephrology & Transplant Team
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Creatinine depends on muscle mass, so the normal range varies. Adult values are roughly 0.6 to 1.2 mg/dL, with men typically a little higher than women.
More muscle means more creatinine. Older adults with less muscle may have lower values that still reflect reduced function — which is why eGFR is more reliable.
Medical Disclaimer
This article is for general education only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified nephrologist about your own condition.
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