What is creatinine clearance?
Creatinine clearance measures how efficiently your kidneys remove creatinine from the blood. It is a common marker of kidney function, often estimated from serum creatinine, age, sex, and weight.
Is creatine safe if clearance is normal?
In people with normal kidney function, creatine supplementation at recommended doses is generally safe and well tolerated. Blood creatinine may rise slightly, but this does not automatically indicate kidney damage.
See the full guide
For a detailed explanation of clearance calculation, formulas, and creatine safety, visit our main creatine clearance calculator page.
Common spelling variations
People often search for "creatine clearence," "creatine clearance," or "creatinine clearance." All refer to the same concept: how well the kidneys filter creatinine, a waste product from muscle metabolism.
When to see a doctor
If you have abnormal kidney function tests, swelling, fatigue, or changes in urination, consult a healthcare provider before taking creatine or any supplement.
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Open the free creatine calculatorFrequently asked questions.
Is creatine clearence the same as creatinine clearance?
Yes. "Clearence" is a misspelling. The correct medical term is creatinine clearance.
Can creatine hurt your kidneys?
In healthy adults, standard doses are not linked to kidney damage. People with existing kidney disease should consult a doctor.
What tests check kidney function?
Blood tests for serum creatinine and eGFR, plus urine tests, are commonly used.
Should I tell my doctor I take creatine?
Yes, especially before blood or urine tests, as creatine can affect creatinine levels.
Is creatine safe for healthy kidneys?
Yes, research supports the safety of standard creatine doses in healthy adults.