C-Peptide (Fasting) Test

The C-peptide Fasting test measures the amount of C-peptide in the blood in a fasting state. Your doctor will usually ask you to avoid eating or drinking for 8 to 12 hours prior to the test. Measuring C-peptide provides a precise assessment of how much insulin your body is producing. Insulin, a hormone produced by the pancreas, helps regulate blood glucose levels by allowing glucose to enter cells for energy. As insulin is made, the pancreas also produces C-peptide, which enters the bloodstream alongside insulin in equal amounts. While C-peptide does not influence blood glucose levels, it remains in the blood longer than insulin, making it easier to measure accurately. This C-peptide test helps assess how much insulin your body is producing and distinguishes between insulin made naturally and insulin from injections. It is used to diagnose the type of diabetes, manage diabetes treatment, identify causes of low blood sugar, and also monitor pancreatic tumours. If you live and are experiencing low blood sugar levels, you might consider a C-peptide test. It can help identify the cause and monitor your ongoing diabetes treatment.

Assesses pancreatic insulin production, crucial for distinguishing between type 1 and type 2 diabetes and guiding treatment.