Test name: Creatine Kinase
Order Code: CK
Preferred Specimen: 2mL serum in a Serum Separator Tube (SST or Tiger-top)
CPT Code: 82550
Collection: Allow SST to clot in an upright position for 30 min, then centrifuge sample within 2 hours of collection. Refrigerate.
Special Instructions and Considerations: Cyanokit (Hydroxocobalamin) at therapeutic concentrations interferes with the test.
Transport Temperature: Refrigerated
Specimen Stability: 2 days under room temperature; 7 days refrigerated
Causes for Rejection: Moderate or Greater Hemolysis