A C-peptide blood test measures the level of C-peptide in the blood. C-peptide is a substance that is produced when insulin is made in the pancreas.
This test is often used to help evaluate insulin production in the body. It can be useful in distinguishing between type 1 and type 2 diabetes, as well as monitoring insulin therapy in diabetic patients.
C-peptide levels can also be measured in cases where insulinoma (a tumor of the pancreas that produces too much insulin) is suspected.
The test requires a blood sample, usually taken from a vein in the forearm. Results may vary depending on factors such as diet, medication, and time of day the test is performed. It is important to follow any instructions provided by your healthcare provider before taking the test.
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