|Name: ||CK (CPK or Creatine Kinase)|
|Specimen: ||1 mL plasma from a Green PST. Serum from a red top is also acceptable.|
A green top (heparinized plasma) is preferable since neither a troponin nor a CK-MB can be added to a serum sample.
|Spec Stability: ||Stable 5 days refrigerated.|
|Reference Range: ||Male: 70 - 250 U/L|
| ||Female: 30 - 135 U/L|
| Method: ||Enzymatic|