What Does Low Creatinine Mean?

Low creatinine usually reflects low muscle mass rather than a medical problem.

Causes

• Low muscle mass (elderly, cachectic)
• Malnutrition
• Pregnancy (increased GFR dilutes)
• Liver disease (decreased creatine production)
• Amputation or paralysis

When to Worry

• Usually NOT concerning by itself
• Check liver function if liver disease suspected
• Assess nutritional status if malnourished