Test Catalog

Test Name

Test ID: CK
Creatine Kinase (CK), Serum

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Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.


6-11 years: 150-499 U/L

12-17 years: 94-499 U/L

> or =18 years: 52-336 U/L


6-7 years: 134-391 U/L

8-14 years: 91-391 U/L

15-17 years: 53-269 U/L

> or =18 years: 38-176 U/L

Reference values have not been established for patients that are less than 6 years of age.

Note: Strenuous exercise or intramuscular injections may cause transient elevation of CK.