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Test Code 146 Creatine Kinase (CK), Total

Additional Codes

ALAB: CKT

PowerChart: Creatine Kinase (CK)

MA Cerner: CK-Total

Test Method

MercyOne:

Enzymatic Rate; Beckman DxC700AU

 

Medical Associates East Campus:

Enzymatic rate; Roche/Hitachi cobas c systems.

Specimen Requirement

0.5 mL plasma or serum is required

Additional Specimen Collection Information

Collect blood in a lithium heparin, green-top or red-top tube. PST and SST (gel tubes) are acceptable. Serum or plasma should be separated from contact with the cells within 2 hours of collection. Specimens not centrifuged within 4 hours of collection may be rejected. Refrigerate the specimen if unable to assay within 4 hours of collection. Hemolyzed specimens are not acceptable. Samples with >3+ lipemia must be cleared prior to analysis.

 

Note: Stabiliy of CK activity in sera is not well-defined, but is generally poor. Specimens should be assayed as soon after collection as possible since activity loss may occur after specimens have been stored for 4 hours at room temperature, 8 to 12 hours refrigerated, or 2 to 3 days when frozen.

Performance

Testing is performed Monday through Sunday.

Routine: Typically completed within 4 hours after the specimen arrives at the testing site.

STAT: Typically completed within 30 minutes after the specimen arrives at the testing site.

Reference Values

MercyOne

28 - 260 IU/L

 

Medical Associates:

Males >3 months of age: 39-308 U/L
Females >3 months of age: 26-192 U/L
Reference values have not been established for patients that are ≤ 3 months of age.

CPT Code Information

82550 Chemistry: Creatine kinase (CK), (CPK); total

Useful For

The determination of creatine kinase is utilized in the diagnosis and monitoring of myocardial infarction and myopathies such as the progressive Duchenne muscular dystrophy.

LOINC Code Information

2157-6 Creatine kinase [Enzymatic activity/volume] in Serum or Plasma