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Test & Collection Guide

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Creatine Kinase

Alternate names:
CK
Laboratory:
Biochemistry
Test Code:
CK
Specimen types:
Serum
Container types:
Serum tube with gelSerum tube with gel
Collection Instructions:
Transport specimen at Room Temperature to lab
Sample haemolysis may make this test unreportable
Minimum Adult Volume:
1 mL
Paediatric Minimum Volume:
0.5 mL
Notes:

CK should only be used in the early stages of myocardial infarction. If the CK is normal shortly after onset of chest pain, thought to be of myocardial origin, then a repeat estimation 3-4 hrs later may be helpful

Skeletal muscle CK is elevated in several situations, eg: post-operatively, after intramuscular injections, following trauma or vigourous exercise, and in some diseases of skeletal muscle

See also - Troponin T, MB Fraction

Frequency:
Daily
Result Turnaround Time:
4 hours
Reference Interval:
Males 60 - 220 U/L
Females 30 - 180 U/L

The reference range is skewed. CK values > 220 are not uncommon in healthy 'normals'.