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C Peptide Fasting Test
Also Known As : C-Peptide - Fasting, Serum; C Peptide Fasting Test
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Brief Details
What is a C Peptide Test?
A C Peptide Test is a diagnostic tool that measures the level of connecting peptide (C-peptide) in your blood. C-peptide is a substance created when your pancreas produces insulin. Your pancreas first makes a molecule called proinsulin, which then splits into two parts: insulin and C-peptide. They are released into your bloodstream in equal amounts.
The test uses a blood sample taken from a vein in your arm. This test helps doctors understand how much insulin your own body is producing and assists in diagnosing different types of diabetes.
Frequently asked questions
Find quick answers to the most common questions about health tests, bookings, and reports.
The test is usually done in the morning after an overnight fast to get a baseline measurement. Sometimes doctors may perform the test after meals to assess pancreatic response.
Yes, fasting for 12 hours is mandatory for accurate results. During this period, you can only consume plain water while maintaining rest conditions.
Yes, severe dehydration can concentrate blood substances, potentially leading to falsely elevated C-peptide levels. Stay adequately hydrated with water before testing as advised by your doctor.
Fast for 12 hours and inform your doctor about all medications. Certain diabetes medications and steroids may affect results, so follow your doctor's guidance regarding temporary medication adjustments.
A healthcare professional cleans your arm, ties a band to make veins visible, inserts a small needle into a vein, and collects blood in a tube. The process is quick and minimally uncomfortable.
Risks are minimal and similar to any blood test. You may experience slight pain, minor bruising, or feel lightheaded. Serious complications like infection are very rare with proper procedures.
Normal fasting C-peptide levels typically range from 1.1 to 4.4 ng/mL.
C-peptide tests are usually ordered with glucose levels, insulin tests, and sometimes autoantibody tests to provide a complete picture of your pancreatic function and diabetes type.
Type 1 diabetes shows very low or undetectable C-peptide levels, while type 2 diabetes typically shows normal or high levels, indicating insulin resistance.
Foods high in carbohydrates and sugars, like rice, bread, sweets, and sugary drinks, cause the most significant increase in C-peptide levels by stimulating insulin production from the pancreas.
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Metropolis Healthcare is a leading diagnostic service provider in India. We are a team of dedicated professionals committed to ensuring you and your family receive the most accurate and timely healthcare solutions. We believe in making health care accessible, affordable and evidence-based. Our expert panel are equipped with the latest technology and manned by a certified team of over 4000+ technicians.
In diagnostic services, we have more than three decades of experience servicing diverse stakeholders health advantage packages for men, women and seniors, genetic fitness & corporation in over 650+ tests like Oncology, Neurology, Gynaecology, Haematology, and many more. Our diagnostic services are located in leading doctors and clinics and serve over 15+ cities in India.
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View your reports and upcoming health checkups at one place.
Please enter the OTP sent to your registered mobile number to verify your identity.
Not sure which tests to take? Share your prescription with us and our team will call you.
Popular Searches
Frequently Booked Tests
Frequently Booked Packages
Please share your details, our health advisor will call you or you can call us at 0804-8911-400.
Please share your details, our health advisor will call you or you can call us at 0804-8911-400.