C-Peptide (Blood Test)

C-Peptide is a substance produced by the pancreas that is often measured through a blood test to assess insulin production. It is released into the bloodstream when proinsulin is converted into insulin, making it a useful marker for evaluating pancreatic function. The measurement of C-Peptide levels can help differentiate between type 1 and type 2 diabetes, as well as identify other insulin-related conditions. A C-Peptide blood test can be particularly beneficial for individuals experiencing unexplained hypoglycemia or those who are on insulin treatment.

Healthcare providers often order a C-Peptide test when there is a need to understand various aspects of glucose metabolism. In addition to distinguishing between types of diabetes, this test can help assess the effectiveness of certain diabetes treatments and determine if a person is producing sufficient insulin. Higher levels of C-Peptide can indicate insulin resistance or the body's overproduction of insulin, while low levels may suggest inadequate insulin production often seen in type 1 diabetes.

The C-Peptide blood test is typically performed in a laboratory setting, requiring a blood sample drawn from a vein. Patients may be advised to fast for several hours prior to the test to ensure accurate measurements. As with any medical test, it is important to discuss the results with a healthcare professional to interpret the findings accurately and to plan an appropriate course of action based on the results.