C-Peptide
4.6 (5 reviews)The C-Peptide test measures endogenous insulin production to evaluate pancreatic beta-cell function and diabetes type.
Test Details
Also Known As
C-Peptide Level Test, Serum C-Peptide Test, Insulin Secretion Test, Beta-Cell Function Test, Endogenous Insulin Test
Sample Type
Blood
Gender
Male, Female
Age Group
All Ages
Categories
Pathology
Test Code
Serum (1 ml)
C-Peptide is a substance released into the bloodstream in equal amounts to insulin when proinsulin is split into insulin and C-peptide by the pancreas. Unlike injected insulin, C-peptide reflects natural (endogenous) insulin secretion, making it a valuable marker for assessing pancreatic beta-cell function.
This test helps differentiate Type 1 diabetes (low or absent C-peptide) from Type 2 diabetes (normal or high C-peptide), evaluate unexplained hypoglycemia, detect insulinoma, and monitor residual insulin production in diabetic patients. It may be performed in fasting state or after stimulation, depending on clinical indication.
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