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C-Peptideng/mL
C-peptide is released together with insulin and reflects how much insulin the pancreas is making.
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What C-Peptide measures
C-peptide is released together with insulin and reflects how much insulin the pancreas is making.
If your C-Peptide is low
C-peptide below the range is commonly associated with reduced insulin production.
Commonly associated with
- Reduced insulin production
- Prolonged fasting
If your C-Peptide is high
C-peptide above the range mirrors insulin production and is commonly associated with insulin resistance.
Commonly associated with
- Insulin resistance
- Non-fasting draw
- Kidney function
Typical reference range
| Group | Typical range |
|---|---|
| Adults | 1.1 – 4.4 ng/mL |
Typical adult values used by many US labs. Your own report prints the range your lab validated for its method, and that range is the one that counts. Labwise always uses the printed range first.
If it is within range
Your C-peptide is within the range printed by your lab.
Also listed as
C Peptide, C-Peptide, Serum
Related tests
This page is general information about what a laboratory test measures and what results outside a reference range are commonly associated with. It is not medical advice, does not diagnose any condition and does not replace your clinician. Discuss your results with your healthcare provider.