Creatine Kinase

Specimen Requirements

1.0 mL Plasma from a PST Mint Green Top Tube - Lithium Heparin (preferred)
or
1.0 mL Serum in a SST Gold Top Tube

Alternate Specimen

1.0 mL Serum from a Red Top Tube in a Plastic Vial
or 
1.0 mL Plasma from a Green Top Tube - Li Heparin in a Plastic Vial

TransportAndStorage

1 week Refrigerated

6 hours unspun

Collection Instructions

Avoid Hemoloysis

Minimum Volume

0.2 mL

Neonatal Volumne

Reference Range:

Male: >1 yr: 21-224 U/L

Female: >1 yr: 10-175 U/L

Test Comments:

This assay utilizes biotin technology. Patients taking vitamin supplements containing high doses of biotin (>5 mg/day) may have falsely decreased test results generated.

Methodology:

• Enzymatic

CDM

01420277

CPT Coding

82550