Thyroid Cancer (Thyroglobulin) Monitor Test
This test measures thyroglobulin along with thyroglobulin autoantibodies in a blood sample. It is described as a panel used in postoperative monitoring of certain thyroid cancers.
About this test
Thyroglobulin is a protein, and this panel reports its level together with thyroglobulin autoantibodies, which can interfere with thyroglobulin measurement. Because of that interference, the laboratory measures thyroglobulin by immunoassay when antibodies are absent, or by mass spectrometry when antibodies are present, so the antibody result helps determine which method applies to a given sample.
People who talk with their clinician about this panel are typically already being followed after treatment for certain thyroid cancers, using thyroglobulin as one marker in that ongoing monitoring. Because thyroglobulin antibodies can affect how the thyroglobulin result is measured and read, the two are reported together rather than as separate, unrelated values.
Test details
| Collection | Quest patient service center |
|---|
Quest resources
Additional details
What this test looks at
The panel reports thyroglobulin along with thyroglobulin autoantibodies. Antibodies are measured because their presence changes how thyroglobulin itself is measured: by immunoassay when antibodies are not present, or by mass spectrometry when they are. A clinician reads both results together rather than thyroglobulin alone.
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 thyroglobulin along with thyroglobulin autoantibodies in a blood sample. The antibody result determines whether thyroglobulin is measured by immunoassay or by mass spectrometry.
How is the sample collected?
The test uses a serum sample from a routine blood draw.
Do I need to prepare for this test?
No preparation instructions are listed for this test, though people follow any instructions their ordering clinician provides.
Is this test used to diagnose thyroid cancer?
No. It is described as a panel used in postoperative monitoring of certain thyroid cancers, for monitoring, not for diagnosis on its own.
Why are thyroglobulin antibodies measured along with thyroglobulin?
Thyroglobulin antibodies can interfere with thyroglobulin measurement, so their presence or absence determines which method is used to measure thyroglobulin and helps a clinician read the result correctly.