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Mayo Clinic Laboratories

Test Code CK Creatine Phosphokinase (CK), Plasma

Performing Laboratory

NRL-Chemistry

Methodology

Rate Reaction/Photometric

Specimen Requirements

Submit only 1 of the following specimens:

 

Preferred:

Specimen Type: Plasma

Container/Tube: Mint-green top (lithium heparin)

Specimen Volume: 1 mL

 

Alternate (Non-Hospital Patient):

Specimen Type: Serum

Container/Tube: Gold top, serum gel

Specimen Volume: 1 mL

Collection Instructions:

1. Spin down unopened (vacuum intact) tube within 45 minutes of draw.

2. Send specimen in original tube.

Reference Values

≥18 years: 30-220 U/L

≤18 years: 5-300 U/L

 

Day(s) Test Set Up

Monday through Sunday

Specimen Transport Temperature

Refrigerate

Test Classification and CPT Coding

82550