Description

The C-peptide test measures the amount of C-peptide in your blood, a protein produced by the pancreas whenever insulin is made. By measuring C-peptide, doctors can determine how much insulin your body is producing.

Why the C-Peptide Test Is Important

This test is useful for diagnosing or monitoring conditions related to insulin production, including:

  • Diabetes – helps distinguish between type 1 and type 2 diabetes and monitor insulin production.
  • Hypoglycemia – identifies whether low blood sugar is caused by excess insulin.
  • Pancreatic Disorders – including pancreatic tumors affecting insulin production.

By assessing C-peptide levels, healthcare providers can better understand pancreatic function and guide treatment decisions for metabolic or endocrine conditions.

Fasting: Recommended.