Diabetes - Bloody Good
Diabetes

C-Peptide

The C-Peptide Blood Test measures how much insulin your body is making by checking C-peptide, a substance released alongside insulin. Low levels can suggest type 1 diabetes or poor insulin production, while higher levels may point to type 2 diabetes, insulin resistance, or pancreatic problems.

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C-Peptide

Managing diabetes or blood sugar concerns and want to understand how well your pancreas is naturally producing insulin for optimal metabolic health?

Overview

The C-Peptide test is like having a window into your pancreas's insulin factory to see how well it's actually working. When your pancreas produces insulin – the hormone that helps your body use sugar for energy – it also releases an equal amount of C-peptide, which acts like a reliable fingerprint of your body's natural insulin production. What makes this test so valuable is that C-peptide levels aren't affected by insulin injections, so it gives doctors a true picture of how much insulin your pancreas is making on its own, even if you're already taking insulin medication.

This information is crucial for understanding what type of diabetes you might have and how to treat it most effectively. Low C-peptide levels typically indicate Type 1 diabetes, where your pancreas has stopped making insulin, while normal or high levels usually point to Type 2 diabetes, where your body makes insulin but doesn't use it well. The test also helps doctors determine whether you need insulin therapy, monitor how your pancreas function changes over time, and even investigate unusual blood sugar episodes or suspected pancreatic tumors. Think of it as getting a personalized roadmap for your diabetes care – one that's based on your body's unique insulin-making ability rather than guesswork.

Reviewed by Dr. Vu Tran
Bloody Good’s Chief Medical Officer

Symptoms

You may benefit from this test if you experience:
Blood sugar spikes after eating Feeling tired after eating Family history of diabetes Prediabetes diagnosis Insulin resistance

Purpose

Essential for individuals with diabetes, unclear diabetes type, pancreatic concerns, or anyone needing comprehensive insulin production and diabetes assessment.

How to prepare

Fast for 8-12 hours before testing. Take sample before 10am. Drink only water during fasting period. Avoid training 24-48 hours prior to test.

Understanding results

Results show C-peptide levels compared to normal ranges. Low levels may indicate Type 1 diabetes or beta cell dysfunction requiring insulin therapy.

After the test

Address abnormal C-peptide through appropriate diabetes classification, insulin therapy if needed, beta cell preservation treatments, and comprehensive diabetes management. Work with endocrinologists for complex cases.

Frequently Asked Questions

  • C-peptide is released with insulin from pancreatic beta cells and reflects the body's natural insulin production capacity, crucial for diabetes classification.
  • Low levels typically indicate reduced insulin production, suggesting Type 1 diabetes or advanced Type 2 diabetes with beta cell failure.
  • Type 1 diabetes usually shows very low C-peptide, while Type 2 diabetes often has normal or high levels initially.
  • Levels reflect beta cell function and can decrease with diabetes progression, autoimmune destruction, or pancreatic disease.
  • Treatment focuses on insulin replacement therapy, blood sugar management, and potentially beta cell preservation strategies.
  • In some cases, early intervention and beta cell preservation treatments may help maintain or improve C-peptide production.
C-Peptide

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How it works

What to expect

We want you to feel bloody good—inside and out. Regular testing isn’t just about checking your current health; it helps you spot abnormal values you might not know about.

1

Book your referral

Choose the testing that suits your goals. After ordering, you will receive your referral by email.

2

Collect your sample

Easy sample collection at one of our 4000+ partner collection centres throughout Australia. Find nearest

3
Receive your results

Receive your results

View your lab results and receive a personalised review from the secure Bloody Good platform.

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