11/10/2026
Does creatine damage your kidneys?
This concern often begins with one laboratory marker: creatinine.
Creatine is naturally converted into creatinine, a breakdown product that circulates in the blood and is filtered by the kidneys. Because creatinine is used to estimate kidney filtration, an increase may look concerning.
But a higher creatinine result does not automatically mean the kidneys have been damaged.
In healthy adults, standard creatine supplementation may cause a small increase in serum creatinine without showing a corresponding decline in kidney filtration. Muscle mass, recent exercise, diet, hydration, medications, and supplement use can also affect interpretation.
That does not mean creatine is appropriate for everyone.
People with known kidney disease, abnormal kidney results, pregnancy, complex medical conditions, or medications that may affect the kidneys should discuss supplementation with a qualified healthcare professional.
The better questions are:
• What was your baseline kidney function?
• Are you currently taking creatine?
• Which kidney markers were measured?
• Are other findings also abnormal?
• Does the laboratory pattern suggest impaired filtration or simply require more context?
Creatinine is a laboratory marker. It is not, by itself, a diagnosis of kidney damage.
Save this post for your next laboratory review.
Educational information only. Do not start or stop supplements or medications based solely on social media content.