Creatinine (Creatinine)
Kidney function test
What This Test Measures
Creatinine is a waste product from muscle breakdown that healthy kidneys filter out. High levels may indicate kidney problems.
Normal Reference Ranges
| Gender | Age Range | Normal Range | Unit |
|---|---|---|---|
| Male | All ages | 0.7000 - 1.3000 | mg/dL |
| Female | All ages | 0.6000 - 1.1000 | mg/dL |
Understanding Your Results
High
What it means: Elevated creatinine suggests your kidneys may not be filtering waste efficiently.
Common causes: Chronic kidney disease, dehydration, high protein diet, certain medications, muscle disorders, or urinary obstruction.
Next steps: Your doctor will likely order additional tests (GFR, urinalysis, kidney ultrasound), review medications, and assess for underlying causes.
Low
What it means: Low creatinine is uncommon and may reflect low muscle mass or certain medical conditions.
Common causes: Low muscle mass, malnutrition, severe weight loss, pregnancy, or chronic illness.
Next steps: Your doctor may assess your nutritional status and muscle mass. Usually not concerning unless very low.
Normal
What it means: Your creatinine level is normal, indicating your kidneys are filtering waste effectively.
Common causes: Healthy kidney function and normal muscle mass.
Next steps: Maintain kidney health through hydration, healthy diet, and blood pressure control.
Medical Disclaimer
This information is for educational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Lab test results should always be interpreted by a qualified healthcare provider in the context of your complete medical history and current health status. Reference ranges may vary between laboratories. Always consult your doctor about your specific results.