In brief
A blood test for antibodies against the thyroid, used when an autoimmune thyroid condition such as Hashimoto's disease is suspected.
What it measures
Thyroid peroxidase (TPO) antibodies, one of the thyroid antibody tests.
Why it is done
If your doctor thinks you could have an autoimmune thyroid condition, thyroid antibody tests can follow your thyroid function tests.
Reading the results
- Hashimoto's disease is diagnosed with blood tests that check thyroid hormone levels and measure thyroid antibodies.
Before the test
Related topics
Connections
Thyroid antibodies (TPO) measures
Thyroid antibody tests, such as TPO antibodies, are used when an autoimmune thyroid cause is suspected.
Sources: Pathology Tests Explained, Thyroid function tests; healthdirect Australia, Hashimoto's disease
Sources
Test information summarised from the sources listed on this page, read on 13 and 19 October 2026. General education only, not medical advice. Spotted a mistake? Please tell us through the HuBu-Intel contact page.