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Creatine Kinase
MessagePerformed in Chemistry
Test Code
CK
Alias/See Also
CK
Preferred Specimen
Green Top LiHep, Plasma
WyMCC - SST
WyMCC - SST
Specimen Stability
For sites except WYMCC and BLMC:
Room Temperature - 2 days
Refrigerated - 7 days
Frozen - 1 month
For WYMCC and BLMC:
≤ 5 days at 2-8°C;
≤ 1 month at ≤-18 °C;
≤ 4 hours at 18-28 °C
Room Temperature - 2 days
Refrigerated - 7 days
Frozen - 1 month
For WYMCC and BLMC:
≤ 5 days at 2-8°C;
≤ 1 month at ≤-18 °C;
≤ 4 hours at 18-28 °C
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Collected in an outdated/expired tube
Hemolized, icteric or lipemic
Contaminated
Hemolized, icteric or lipemic
Contaminated
Setup Schedule
Daily, Sunday through Saturday
Report Available
Less than 4 hours
Reference Range
Refer to the Chemistry Reference Range document found on this page - Downtime
Clinical Significance
Determination of CK activity is employed in the diagnosis and monitoring of acute and chronic myopathies, to include rhabdomyolysis and Duchene muscular dystrophy. In addition, CK may be used as a sensitive, but non-specific biomarker to facilitate diagnosis of acute myocardial infarction. Due to this lack of specificity, CK has generally been replaced by cardiac troponin as the preferred biomarker for this purpose.
