Test Code: CPK
Plain red top or SST tube.
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
Minimum volume: 0.1 mL serum
Offsite: Send frozen serum Priority Overnight via FedEx and in a well insulated container on dry ice.
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
Monday - Friday
4 hour routine, 1 hour STAT
Enzymatic Rate (Creatine Phosphokinase);CPKX
Newborn - 4 years
5 years - 9 years
10 years - 14 years