C-peptide
What It Is
C-peptide is produced alongside insulin and reflects how much insulin your pancreas is making.
Why It Matters
C-peptide helps distinguish between type 1 and type 2 diabetes and assesses pancreatic beta-cell function.
If Levels Are High
High C-peptide suggests increased insulin production, seen in insulin resistance or type 2 diabetes.
If Levels Are Low
Low C-peptide indicates reduced insulin production, as seen in type 1 diabetes.
Preparation
Fasting for 8–12 hours is typically recommended.
How Often to Test
As clinically indicated for diabetes assessment.
Panels Including This Marker
Important Disclaimer
This information is for educational purposes only and does not constitute medical advice or diagnosis. Results should be interpreted in clinical context by a qualified healthcare professional. If you have severe symptoms or urgent concerns, seek urgent medical help.