CREATINE KINASE - NAC

Test Code

Alias/See Also

CPK; Creatinine Kinase; Creatinine Phosphokinase

CPT Codes
82550

Preferred Specimen

1 Gold tube (gel separator)

Minimum Volume

0.5 mL

Other Acceptable Specimens

or 1 Green tube (Lithium Heparin)

Instructions

Centrifuge for complete separation of plasma/serum and red cells. See Specimen Container for appropriate sample type. May remain at room temp until tested.

Specimen Stability

2-8°C up to 6 days; 15-30°C up to 4 hours; Frozen up to 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Moderate hemolysis

Methodology

NAC activated at 37°C

Setup Schedule

M, T, W, Th, F, Sa, Sun

Report Available

Within 24 hours of receipt at the performing laboratory. Stat testing is available.

Reference Range

30 - 223 U/L

Clinical Significance

Measurements of creatine kinase and its isoenzymes are used in the diagnosis of skeletal muscle and heart diseases

Performed By
Alverno Laboratories

Performing Laboratory
Alverno Central Lab
NCHB1 (Chemistry, Beckman AU)

Last Updated: June 4, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.