| Ordering Code | 525 |
|---|---|
| Test Name | C-Peptide |
| Alias | Connecting Peptide Peptide Activity |
| Preferred Specimen | Serum |
| Preferred Container | SST (Gold) |
| Other Specimen/Container | Plasma in Lithium Heparin (Green), Serum in Plain (Red) |
| Optimum Volume | 1 mL |
| Transport Requirements | Oahu: Frozen Airline: Frozen |
| Specimen Stability | Ambient: 4 Hours Refrigerated: 24 Hours Frozen: 30 Days Freeze only once. |
| Rejection Criteria | Grossly hemolyzed, Insufficient quantity, Re-frozen, Specimen older than stability limits, Wrong specimen type, Heat-inactivated samples, Sample stabilized with azide |
| Avail. Stat | NO |
| Analytic Time | Up to 2 Days |
| Methodology | Electro-Chemiluminescent Immunoassay |
Reference range(s)
The reference ranges listed below are valid on this date of June 29, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| C-Peptide | ALL | 1.1-4.4 | 1.1-4.4 | ng/mL |