Mediki
Creatinine blood test: what your result means
Creatinine measures a muscle metabolism waste product filtered by kidneys. It is a core marker of kidney filtration status.
- Category
- Kidney function
- Standard unit
- mmol/L
- Reported in
- mmol/L, µmol/L, mg/dL, mg/100mL, mg%, mg/L and more
What does high creatinine mean?
Higher values may suggest reduced kidney filtration. What counts as high depends on the reference range printed on your lab report, because ranges differ between laboratories.
What does low creatinine mean?
Lower values may reflect lower muscle mass or dilution effects. What counts as low depends on the reference range printed on your lab report, because ranges differ between laboratories.
Creatinine units and conversion
Mediki shows creatinine in mmol/L. Labs may report it in other units; Mediki converts them automatically so results from different labs line up on one chart.
| Unit on your report | Convert to mmol/L | Convert back |
|---|---|---|
| µmol/L | 1 µmol/L = 0.001 mmol/L | 1 mmol/L = 1,000 µmol/L |
| mg/dL, mg/100mL, mg% | 1 mg/dL = 0.0884 mmol/L | 1 mmol/L = 11.31 mg/dL |
| mg/L, µg/mL | 1 mg/L = 0.00884 mmol/L | 1 mmol/L = 113.1 mg/L |
Convert a value from your report with the blood test unit converter.
Why track creatinine over time?
A single creatinine result is a snapshot. Comparing it with your earlier tests shows whether a value is stable, slowly drifting, or responding to a change in treatment or lifestyle, which is often more useful than one number on its own.
Read our guide on how to read blood test results to understand reference ranges, flags and units.
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Medical disclaimer: This page is general information, not medical advice. Reference ranges differ between laboratories, and only a doctor can interpret your results in the context of your health.