C-Peptide
| Sunquest Code: | CPEPT | ||
| Epic Code: | LAB521 | Epic Name: | C-Peptide |
| Synonyms: | C Peptide; CPEPT | ||
| Methodology: | Chemiluminescent immunoassay | ||
| Turnaround Time: | Performed Mon-Fri; results are reported the same day. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 1 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Container: | Red or gold (gel) (Green (lithium heparin, gel), Green (sodium heparin, no gel), Red (no gel)) |
| Causes for Rejection: | Collected in EDTA or sodium fluoride. Samples not separated from cells within 2 hours of collection. |
Processing and Shipping
| Specimen Processing: | Within 2 hours centrifuge and aliquot 0.5 mL, 0.2 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | Stability: Samples are stable for 7 days refrigerated. For longer storage, freeze. |
| Test Performed at or Referral Lab | Endocrine (UMMC-East Bank) |
Interpretive
| Reference Range: | Fasting: 0.9-6.9 ng/mL |
| Use: | For differentiating types of diabetes mellitus. |
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