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Glucose & Diabetes
Normal range 0.8-3.1 ng/mL (0.26-1.03 nmol/L SI). Specimen: Serum (fasting).
Also known as: connecting peptide.
Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for C-Peptide; those can be narrower than the band shown.
| Specimen | Serum (fasting) |
|---|---|
| Conventional range | 0.8-3.1 ng/mL |
| SI range | 0.26-1.03 nmol/L |
| Conversion factor | ×0.331 (conventional → SI) |
| Panel | Glucose & Diabetes |
Convert any C-Peptide result between units on the unit converter.
The standard teaching reference range for C-Peptide is 0.8-3.1 ng/mL in conventional units, or 0.26-1.03 nmol/L in SI units. This value is measured in serum (fasting).
Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
Above the range
Below the range
At the bedside
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