Creatine Phosphokinase
Test Code
CPK
Description
Collect
Plain red top or SST tube.
Specimen Preparation
Onsite [NJH]: Transport to lab within 1 hour.
Offsite: Separate serum from cells within 2 hours by centrifuge and aliquot into a labeled polypropylene or similar plastic tube.
Preferred volume: 1 mL serum
Pediatric Collection
Minimum volume: 0.1 mL serum
Storage Transport Temp
Offsite: Send frozen serum Priority Overnight via FedEx and in a well insulated container on dry ice.
Stability
Stability after cell separation:
4 hours at RT (15-25°C)
8-12 hours refrigerated at 2-8°C
1 month frozen at ≥ - 20°C
Performed
Monday - Friday
Methodology
Enzymatic Rate
Reported
4 hour routine, 1 hour STAT
Department
Core LabSynonyms
Enzymatic Rate (Creatine Phosphokinase);CPKX
Reference Interval
| Creatine Phosphokinase, Serum |
Human |
|
| Male | Female | |
|
U/L |
||
|
Newborn - 4 years |
41-277 |
34-204 |
|
5 years - 9 years |
54-269 |
44-189 |
|
10 years - 14 years |
38-255 |
28-170 |
|
15+ years |
38-174 |
26-140 |
CPT Code
82550