C-peptide is an insulin-secreting peptide. It is released by the beta cells in equimolar concentrations. A low C-peptide level indicates that the pancreas is not producing enough insulin. High levels indicate that the body is producing too much insulin. This can lead to metabolic syndrome and insulin resistance.
C-peptide levels may be used to help diagnose type 1 and type 2 diabetes. In addition, they may be used to monitor how effective treatment is working. They also can be helpful in identifying patients at risk for diabetic ketoacidosis.
During a blood test, the healthcare provider will draw a small amount of blood from a vein. The sample is then sent to a laboratory for analysis. Sometimes a urine test is used instead. To get the best results, it is important to fast for at least 8 hours before and 24 hours after the test.
Blood tests and urine tests have minimal risks. Your doctor will provide you with instructions for the procedure and provide a container to keep the blood or urine in. You may feel a slight sting when the needle is inserted. However, this sting usually goes away within a few hours.
C-peptide has been shown to reduce inflammation and inhibit atherosclerotic plaque formation. Additionally, it has been linked to decreased expression of high glucose-induced VCAM, ICAM, and P-selectin.
If you are thinking of having a C-peptide test, make sure to talk to your healthcare provider. He or she will be able to explain the test and help you understand the results.