A C-peptide blood test is a test used to measure the level of C-peptide in a person's blood. C-peptide is a protein produced by the pancreas along with insulin. The test is used to diagnose and monitor conditions that affect insulin production, such as diabetes. It is also used to monitor the effectiveness of insulin replacement therapy in people with diabetes. The test is performed on a small sample of blood taken from a vein in the arm.
This page is provided for educational and informational purposes only and does not constitute the provision of medical advice or professional services. The information provided should not be used for diagnosing or treating a health problem or disease, and those seeking personal medical advice regarding any of the tests and conditions referenced above are advised to consult with a licensed clinician. Always seek the advice of your qualified health provider regarding a medical condition and do not disregard professional medical advice or delay in seeking it because of any information on this page. If you think you may have a medical emergency, immediately call 911 or go to the nearest urgent care center or hospital.