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Specimen Collection Manual and Test Catalog

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CK

Geisinger Epic Procedure Code:  LAB2021    Geisinger Epic ID:  14875

SPECIMEN COLLECTION
Specimen type: 

Plasma or serum


Preferred collection container: 
Specimen required: 

2 mL of serum or plasma; minimum 0.2 mL.



SPECIMEN PROCESSING
Processing instructions: 

Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection.


Transport temperature: 

Refrigerated (preferred). Room temperature or frozen specimen also acceptable.


Specimen stability: 

Room temperature: 2 days. Refrigerated: 7 days. Frozen: 4 weeks.


Rejection criteria: 

Stability limits exceeded.



TEST DETAILS
Reference interval: 

Female: 26-192 Unit/L
Male: 39-308 Unit/L


Additional information: 

Vigorous exercise, intramuscular injections, and traumatic venipuncture may elevate CK results.


CPT code(s):  82550
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Test includes: 

Total creatine kinase.


Methodology: 
Enzymatic
Synonyms: 

CPK, Creatine kinase, CK, CK-Total


Clinical significance: 

Test for myocardial infarction and skeletal muscle damage. Elevated results may be due to myocarditis, myocardial infarction, muscular dystrophy, muscle trauma or excessive exercise.


Doctoral Director(s): 
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Review Date:  12/27/2024

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