CREATINE KINASE (CK) ISOENZYMES

Specimen Required
Draw blood in a SST tube. Centrifuge, separate serum from cells within 4 hours and send 2.0 mL serum (0.5 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Serum: Red-top

Rejection Criteria
Grossly hemolyzed samples, heat activated samples; Plasma: EDTA, oxalate, citrate, heparin, fluoride

Methodology
Electrophoresis/Spectrophotometry

Stability
Room Temperature: N/A; Refrigerated: 7 days; Frozen: 14 days

Reference Range
Creatine Kinase:   30-223 U/L  
MM% of Total (96.7-100.0%)
MB% of Total (0-3.3%)
BB% of Total (0.0)

Performed
Monday, Thursday

Turnaround Time3-5 days
Test CodeCKISO
CPT-4 Code (s)
82550, 82552
LOINC Codes
Creatine Kinase total   2157-6  
MM%   15049-0  
MB%   12187-1  
BB%   15048-2  

Warde
Medical
Laboratory