Above the range
Common causes of a high Creatine Kinase (CK)
- Muscle injury or rhabdomyolysis
- Myocardial infarction
- Intense exercise
- Statin-related myopathy
Looking for the other direction? See what causes a low Creatine Kinase (CK).
All tests · Cardiac Markers · Creatine Kinase (CK)
Above the range
What causes a high Creatine Kinase (CK)?
Normal range 30-200 U/L (0.5-3.34 µkat/L SI). Specimen: Serum. See the full Creatine Kinase (CK) reference page for critical values and nursing considerations.
What is the normal range for Creatine Kinase (CK)?
The standard teaching reference range for Creatine Kinase (CK) is 30-200 U/L in conventional units, or 0.5-3.34 µkat/L in SI units. This value is measured in serum.
| Specimen | Serum |
|---|---|
| Conventional range | 30-200 U/L |
| SI range | 0.5-3.34 µkat/L |
| Critical value | Marked elevation (thousands) suggests rhabdomyolysis |
| Panel | Cardiac Markers |
Full details, including nursing considerations, on the Creatine Kinase (CK) normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
Same panel