Creatinine
Creatinine is a waste product from normal muscle metabolism, filtered out by the kidneys.
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Conventional Range
0.7 - 1.3 mg/dL
Optimal Range
0.8 - 1.1 mg/dL
Why It Matters
Creatinine levels reflect kidney function. Elevated levels indicate reduced kidney filtering capacity.
If Your Level Is High
High creatinine suggests reduced kidney function, dehydration, or high muscle mass in some cases.
Possible Causes
- Kidney disease
- Dehydration
- High protein diet
- Muscle breakdown
If Your Level Is Low
Low creatinine may indicate low muscle mass, malnutrition, or liver disease.
Possible Causes
- Low muscle mass
- Malnutrition
- Liver disease
How to Optimize
Stay well hydrated, manage blood pressure and diabetes, avoid nephrotoxic medications, limit protein if advised.
Dietary Factors
- Protein intake
- Creatine supplements
- Hydration
Lifestyle Factors
- Muscle mass
- Exercise intensity
- Medication use