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Thyroglobulin antibodies blood test: what your result means
Thyroglobulin antibodies measure immune activity against thyroid proteins. They help evaluate autoimmune thyroid patterns.
- Category
- Thyroid
- Standard unit
- IU/mL
- Reported in
- IU/mL, kIU/L
What does high thyroglobulin antibodies mean?
Higher values may suggest autoimmune thyroid immune activation. What counts as high depends on the reference range printed on your lab report, because ranges differ between laboratories.
What does low thyroglobulin antibodies mean?
Lower or negative values usually suggest less detectable thyroid autoantibody activity. What counts as low depends on the reference range printed on your lab report, because ranges differ between laboratories.
Thyroglobulin antibodies units and conversion
Mediki shows thyroglobulin antibodies in IU/mL. Labs may report it in other units; Mediki converts them automatically so results from different labs line up on one chart.
kIU/L is numerically the same as IU/mL, so no conversion is needed.
Why track thyroglobulin antibodies over time?
A single thyroglobulin antibodies result is a snapshot. Comparing it with your earlier tests shows whether a value is stable, slowly drifting, or responding to a change in treatment or lifestyle, which is often more useful than one number on its own.
Read our guide on how to read blood test results to understand reference ranges, flags and units.
Following thyroglobulin antibodies as part of a panel? See the thyroid test tracker.
Track your thyroglobulin antibodies results in one chart
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Medical disclaimer: This page is general information, not medical advice. Reference ranges differ between laboratories, and only a doctor can interpret your results in the context of your health.