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Creatine Kinase
MessageMeasurements of Creatine Kinase are used in the diagnosis and treatment of myocardial infarction and muscle disease, such as progressive Duchenne-type muscular dystrophy. Creatin Kinase (CK) is an enzyme which is found primarily in skeletal muscle, cardiac muscle, and brain tissue.
Test Code
CK
Alias/See Also
LAB3000053
CPK
CPK
CPT Codes
82550
Preferred Specimen
2.0 mL serum collected in a gold serum separator tube (SST)
Minimum Volume
0.5 mL serum
Other Acceptable Specimens
2.0 mL serum collected in an orange rapid clot serum separator tube (RCT)
2.0 mL plasma collected in a light green lithium heparin plasma separator tube (PST)
2.0 mL plasma collected in a light green lithium heparin plasma separator tube (PST)
Specimen Stability
Stabile in serum or plasma for:
- 4 hours at room temperature (15 - 25oC)
- 12 hours refrigerated (2 - 8oC)
- 1 month frozen (<=-20oC)
Reference Range
| Sex | Age | Reference Range |
|---|---|---|
| M/F | 0 - 1 day | 33 - 400 U/L |
| M | 2 days - 150 years | 45 - 240 U/L |
| F | 2 days - 150 years | 30 - 160 U/L |
Performing Laboratory
Penn Medicine Lancaster General Health
