C-Peptide, Blood Test
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About Our C-Peptide, Blood Test
Note: Fasting is not required for this test.
This blood test is used to evaluate low or high blood sugar levels. It is often ordered for patients with diabetes, hypoglycemia or hyperglycemia. Because C-peptide levels and body-produced insulin levels are generally equal, this test is used to measure insulin levels and is especially helpful for measuring insulin levels in those who use insulin medication.
C-peptide is a breakdown product of insulin. When the pancreas produces insulin, it is initially a large molecule. It later splits into two: Insulin and C-peptide.
The C-peptide test can be used to indicate a variety of diseases and disorders, but it is primarily used in the diagnosis of hypoglycemia (low blood sugar).