Below the range
Common causes of a low Creatine Kinase (CK)
- Low muscle mass
Looking for the other direction? See what causes a high Creatine Kinase (CK).
All tests · Cardiac Markers · Creatine Kinase (CK)
Below the range
What causes a low 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.
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