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Diabetes

C-Peptide Test

The C-peptide test measures C-peptide levels in your blood or urine. C-peptide is a substance made in the pancreas along with insulin. Measuring C-peptide tells doctors how much insulin your body is making.

When is it needed?

Diagnosing type 1 diabetesMonitoring insulin productionInvestigating low blood sugar (hypoglycemia)Guiding diabetes treatment

How to prepare

You may be asked to fast for 8-12 hours before this test. Your doctor will tell you if you need to stop any medications.

More about this test

The C-peptide test measures C-peptide levels in your blood or urine. C-peptide is a substance made in the pancreas along with insulin. Measuring C-peptide tells doctors how much insulin your body is making.

Medically reviewed by: Locatemycentre editorial team. Informational only; not medical advice. Always consult a licensed physician for diagnosis or treatment.

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Browse verified centres offering C-Peptide Test in major Indian cities.

C-Peptide Test: frequently asked questions

What is a C-Peptide Test?
The C-peptide test measures C-peptide levels in your blood or urine. C-peptide is a substance made in the pancreas along with insulin. Measuring C-peptide tells doctors how much insulin your body is making.
Do I need to fast before a C-Peptide Test?
You may be asked to fast for 8-12 hours before this test. Your doctor will tell you if you need to stop any medications.
How much does a C-Peptide Test cost in India?
Prices for C-Peptide Test vary widely by city, lab, and accreditation. As a rule of thumb, NABL-accredited labs in metros are more expensive than standalone neighbourhood labs. Use Locatemycentre to compare verified centres near you.
Can I get a C-Peptide Test with home sample collection?
Yes. Almost every NABL-accredited diagnostic centre in metros like Bangalore, Delhi, Mumbai, Chennai and Hyderabad offers home sample collection for C-Peptide Test. Book the night before, especially for any fasting tests, and confirm the visit fee (typically ₹100-₹250).
How long do C-Peptide Test results take?
Most routine C-Peptide Test reports are ready within 6-24 hours of sample collection. Specialised assays and tests sent to a parent lab may take 2-7 days. Confirm the exact turnaround with the centre before booking - it matters if you have a follow-up consult scheduled.
How will I receive the report?
Reports are emailed as a PDF and are usually downloadable from the centre's patient portal using your registration ID. Hard-copy collection at the counter is usually free; courier delivery is optional. Save the digital copy - your physician will want to see it alongside any prior reports.
Do I need a doctor's prescription for a C-Peptide Test?
For most routine versions of C-Peptide Test you can walk in without a prescription. Some advanced or restricted tests require a referral by law, and a physician's involvement is always recommended so the result is interpreted against your symptoms and history.
When should I repeat a C-Peptide Test?
Repeat timing depends on the clinical reason for the test. For monitoring a known condition, your physician will set the interval (often every 3-6 months). For a screening test that came back normal, repeat as part of your annual health check unless your doctor advises otherwise.