C-Peptide LIS Code: C-PEP
Assess insulin production with a private C-peptide blood test for diabetes evaluation.
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About this test
Understanding the Role of C‑Peptide, Insulin, and Glucose Testing
The combined measurement of C‑peptide, insulin, and glucose is essential in diagnosing and managing different forms of hypoglycaemia. These tests help distinguish between factitious hypoglycaemia and hypoglycaemia caused by excess insulin production (hyperinsulinism), ensuring accurate treatment and monitoring.
C‑Peptide as a Marker of Endogenous Insulin Secretion
C‑peptide testing provides a more accurate reflection of natural insulin production from the pancreas, particularly in insulin-treated diabetic patients. This is because high levels of anti-insulin antibodies can interfere with insulin measurements, while C‑peptide remains a reliable indicator of residual β‑cell activity.
When is C‑Peptide Measured?
C‑peptide levels are typically evaluated:
In a fasting state
During stimulation or suppression tests
These measurements help assess how much insulin the pancreas is still producing, which is crucial for proper diabetes classification and treatment planning.
Clinical Uses of C‑Peptide Testing
Early detection of Type 1 Diabetes Mellitus
Differentiation between Latent Autoimmune Diabetes in Adults (LADA) and Type 2 Diabetes
Monitoring the success of islet cell transplantation
Post-pancreatectomy monitoring to evaluate insulin function
Private C‑Peptide, Insulin, and Glucose Testing in Slough and Surrounding Areas
Specialist diagnostic services for C‑peptide, insulin, and glucose levels are available in Slough, Windsor, Maidenhead, and nearby Berkshire locations. These tests support early detection of diabetes subtypes, guide treatment decisions, and improve long-term management of hypoglycaemic and diabetic conditions.
