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Laboratory Medicine

Test catalogue

Creatinine Kinase (CK)

Test Name

Creatinine Kinase (CK)

Gold Tube Specimen Type / Requirements

Container Type = 1 Gold Top (SST)

Minimum Volume = 1 ml serum

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Serum or heparinized plasma free from hemolysis, collected with or without gel separator. Plasma samples may occasionally produce unpredictable rate reactions resulting in false low results. Write your initials, date and time of collection on the collection label or requisition.

Laboratory Staff Instructions: Allow specimen to clot completely at room temperature. Remove serum or plasma from cells ASAP to minimize hemolysis and contamination by adenylate kinase from the red cells

Rejection Criteria: Gross hemolysis, Unlabeled or Not Sufficient Quantity samples will be rejected.

Stability: Stable at room temperature for 48 hours, refrigerated for 1 week and frozen for 1 month

Transportation: Send sample to core lab as soon as possible.

Required Documentation

Turnaround Time (TAT)

1 hour for Trauma / Stat

2 hours for routine

Test Utilization

Reference Value

Male: 5 – 160 U/L

Female: 5 – 130 U/L

Test Code



Spectrophotometric (Kinetic rate method)

Testing Location


Other Information

Last Updated: June 06, 2019