Calcitonin Test

Calcitonin Test

Category
Cancer
Sample
Blood sample taken from a vein in your arm
Reports () Terms & Conditions Report time varies with time of sample collection.
In 2 days
Fasting
No Fasting
Age
5+ Years

What Is This Test?

Measures calcitonin, a hormone made by C-cells of the thyroid gland.

Why this test is performed?

The main marker for medullary thyroid cancer — used for diagnosis, monitoring after treatment and screening family members at risk.

Who should take this test?

People being evaluated or treated for cancer, or as advised by an oncologist. Not a stand-alone screening test.

Test Preparation

No fasting needed.

Medical disclaimer · for information only, not medical advice

This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.

In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.

Read our Editorial Policy and Medical Review Process.

Frequently asked questions

It has a minor role; its main use in testing is as a tumour marker.

No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.

Blood sample taken from a vein in your arm.

Usually within 15–39 hours after the sample reaches the lab. You will receive the report online.

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