Calcitonin Test
This test measures calcitonin, a hormone linked to medullary thyroid carcinoma, in a blood serum sample. Quest describes calcitonin measurements as used to help monitor the disease, used for monitoring, not diagnosis on its own.
About this test
Calcitonin, also known as thyrocalcitonin, is a hormone measured in blood serum. Quest describes this test as reporting the concentration of calcitonin, with levels increased in medullary thyroid carcinoma.
The sample is analyzed by immunoassay, and Quest lists an overnight fast before the blood draw, when possible, as preferred preparation. Because calcitonin is used for monitoring, a clinician reads results over time and alongside other findings rather than treating one value on its own as conclusive.
Test details
| Collection | Quest patient service center |
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Quest resources
Additional details
What this test looks at
The test reports one value: the concentration of calcitonin in blood serum. It is listed under the alias thyrocalcitonin as well as calcitonin, and the two names refer to the same hormone and the same measurement.
How it's often used alongside other tests
Because calcitonin is described as a monitoring marker for medullary thyroid carcinoma, it is typically ordered as part of a series of measurements over time rather than as a single, one-off check. A clinician who is already following someone for this condition reads each new calcitonin result against the earlier ones.
This test isn't part of the Celio Health store at the moment, so it can't be ordered or requested here. The test menu lists everything that can.
Laboratory results should always be interpreted by a licensed clinician who knows your health history. This page is information about a test, not medical advice.
Frequently asked questions
What does this test measure?
It measures the concentration of calcitonin, a hormone, in a blood serum sample, using immunoassay.
How is the sample collected?
The test uses a 1 mL frozen serum sample from a routine blood draw.
Do I need to prepare for this test?
Quest lists an overnight fast before the blood draw, when possible, and preparation details appear with the test details.
What is calcitonin used to monitor?
Quest notes that calcitonin levels are increased in medullary thyroid carcinoma and that calcitonin measurements may be used to monitor the disease. It is used for monitoring, not diagnosis on its own.