0.5 to 2.0 ng/mL (nanograms per milliliter)
Normal ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
C-peptide values are interpreted based on the blood sugar level. C-peptide is a sign that the body is producing insulin. Low values (or no insulin C-peptide) indicate that your pancreas is producing little or no insulin.
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