Price: £165
Turnaround: 5 working days
Appointment: 15 minutes
General Health
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It’s common to need a GP appointment at short notice. Health concerns don’t always follow a schedule, and symptoms can
May 12, 2026
A C-peptide blood test is an important diagnostic tool for evaluating insulin production and overall pancreatic function. It is a simple procedure that can provide valuable insights into diabetes, insulin resistance, and other metabolic disorders.
At our City Walk-In Clinic in London, we offer expert C-Peptide testing with results you can trust. Plus, there is no extra charge for the blood draw (phlebotomy fee) required for this test.
Approximately 4.6 million adults have been diagnosed with diabetes in the UK, and 1.3 million adults have undiagnosed type 2 diabetes. If you are currently experiencing common diabetes symptoms, like excessive thirst, fatigue, or unexplained weight loss, we recommend getting a C-Peptide test.
Getting tested can also be useful if you need clarification on the type of diabetes you may have or require monitoring of insulin production after starting diabetes treatments. This test is also highly recommended if you are being assessed for conditions like hypoglycaemia or insulinoma (a rare insulin-producing tumour).
Your C-peptide levels can help assess your overall insulin production. That means that a C-Peptide blood test can help:
A C-peptide test may be recommended if you show signs of diabetes, including persistent fatigue, excessive thirst, or unexplained weight loss. It is also valuable for evaluating your body’s insulin production and determining the appropriate treatment plan.
If your healthcare provider suspects diabetes or related conditions, they may suggest a C-peptide test. This test can help confirm the diagnosis, clarify the type of diabetes, or monitor how well your pancreas produces insulin.
C-Peptide testing is often advised if you are experiencing symptoms of diabetes, need a more precise diagnosis regarding the type of diabetes, or require tracking of insulin production. It is also beneficial when assessing other metabolic issues or rare conditions like insulinoma.
You may benefit from a C-Peptide test if you are dealing with diabetes symptoms such as fatigue, excessive thirst, or weight loss. This test helps determine the type of diabetes, evaluate insulin production, and guide treatment strategies effectively.
Your doctor may recommend a C-Peptide test for several reasons, including:
Use our online booking engine or book your test by giving us a call.
On the online booking engine select the “appointment type” you need.
You will be seen by one of our friendly phlebotomists or trained clinicians.
A C-Peptide aesthetic treatment is designed to measure your overall insulin production to help diagnose (or monitor) conditions like diabetes or insulinoma. Please do not forget to discuss your medical history and medications with your healthcare provider prior to your procedure. Please note 12 hours of fasting are recommended for an accurate result.
One of our healthcare professionals will collect a small blood sample from your vein, usually in the arm. The blood draw itself is generally painless, aside from a brief prick sensation.
C-Peptide results are typically available within a few days. Discuss them with your doctor to understand what they mean for your health.
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Hidden Charges
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No GP consultation
needed
No GP appointment requirement for blood tests
Established
since 1998
Experienced doctors & a professional team.
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confidential
Your medical records are kept private at all times.
We offer a wide range of private blood tests in London. Same-day appointments are available 5 days a week.
We work with experienced consultants & healthcare professionals who have received positive feedback from our patients, and with whom we have established long-term relationships.
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