CPK, Creatine Phosphokinase
24 hours
Enzymatic Colorimetric
Accredited NRL Laboratory
Daily
CK is used primarily to diagnose and monitor conditions affecting skeletal muscle breakdown (myopathy) or other causes of muscle injury e.g. trauma, toxin or drug induced.
This test is not to be confused with CK-MB (CK-Myocardial Band) which is sometimes used as a marker of cardiac events.
Serum or Plasma
0.5 mL
Serum (SST; Gold Top or plain serum; Red Top) - Preferred Lithium Heparin Plasma (Green Top) - acceptable
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Refrigerated | 7 days |
| Frozen | 30 days |