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C Peptide Blood Test
C Peptide Blood Test
C Peptide Blood Test
C Peptide Blood Test

C Peptide Blood Test

C-peptide is released into the blood when insulin is produced by the pancreas. This test measures the level of C peptide in your blood to distinguish between type 1 and type 2 diabetes when diabetes has just been diagnosed, to help find the cause of low blood sugar.
Blood sample 1 biomarker included 5 working days turnaround

What's included?

Biomarker profile

  • Amino Acids

Amino Acids (1 Biomarker)

Special instructions

Do not eat for 12 hours prior to your test. Drink plenty of water, if you take medication then you are allowed to take it as you would normally. Do not take biotin supplements for 2 days prior to this test. If you are taking prescribed biotin you should discuss this with your doctor.
C-peptide is a peptide that is made when proinsulin is split into insulin and C-peptide. C-peptide is generally found in amounts equal to insulin.

A C-peptide test can be done when diabetes has just been diagnosed and it is not clear whether type 1 diabetes or type 2 diabetes is present or to help find the cause of low blood sugar (hypoglycaemia), such as excessive use of medicine to treat diabetes or a noncancerous growth (tumour) in the pancreas.

Dr Sam Rodgers MBBS, MRCGP

How it works

  • Take the test

    Collect your sample at home, visit a partner clinic, or we can even send a nurse to you.
  • Post your sample

    Send your sample back on the same day you take it in the freepost pack to our laboratory.
  • Get your results

    View your results with doctor's advice on your personal dashboard.
Laboratories you can trust

Laboratories you can trust

Trusted by the NHS and private clinics alike, you can be sure of the highest testing standards from our fully accredited partner laboratories.

Expert interpretation <br>
of your results

Expert interpretation
of your results

One of our team of doctors will review your results and give you personalised advice based on your medical history, lifestyle and health and fitness goals.

Your personal<br>
health centre

Your personal
health centre

Discover the easy way to track your health through our online portal, View your results with doctor's advice, monitor any changes over time and see the improvements you can make to your health with simple lifestyle changes.

Questions? Let us help

Questions? Let us help

Our customer care team is on-hand to help you find the test that's right for you. Get in touch via phone, live chat or email.

What our customers say

We ask every Medichecks customer about their experience - read what they have to say


Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.