| Ordering Code | 4583 |
|---|---|
| Test Name | CK MB |
| Alias | Creatine Kinase MB Isoenzyme Creatine Kinase Muscle Brain CK MB CK-MB CK-2 |
| Preferred Specimen | Plasma |
| Preferred Container | Lithium Heparin PST (Green) |
| Other Specimen/Container | Serum in SST (Gold), Serum in Plain (Red), Plasma in Lithium Heparin (Dark Green-PP No Gel) |
| Optimum Volume | 1 mL |
| Collection Instructions | Sample types should not be used interchangeably during serial sampling. |
| Handling Instructions | All specimen types must be centrifuged within 2 hours of collection. If no gel separation present in tube and testing is delayed, plasma/serum is aliquoted from cells within 2 hours of collection. |
| Transport Requirements | Oahu: Refrigerated Airline: Refrigerated |
| Specimen Stability | Ambient: 8 Hours Refrigerated: 2 Days Frozen: 3 Months (Aliquot) Frozen samples should be thawed only once. |
| Rejection Criteria | Specimen older than stability limits, Grossly hemolyzed/ lipemic/icteric, Insufficient quantity |
| Avail. Stat | YES |
| Analytic Time | 1 Day |
| Methodology | Two-site immunoenzymatic "sandwich" assay/Chemiluminescent Immunoassay |
Reference range(s)
The reference ranges listed below are valid on this date of March 13, 2026.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| CK MB | ALL | 0.6-6.3 | 0.6-6.3 | ng/mL |