Reviewed: 13. Juli 2026
TPO-AK Thyroid Peroxidase Antibodies (TPO-Ab)
Unit: IU/ml
Quick Explanation
Anti-TPO antibodies target an enzyme of the thyroid and are the most important indicator of an autoimmune thyroid disease like Hashimoto's thyroiditis. Elevated values often, but not always, confirm such a disease.
📊 Reference Values
ℹ️ Reference ranges may vary slightly between laboratories. Always compare your value with the reference range from your own lab report.
🔍 Possible Causes
Value too high — possible causes
- ·Hashimoto's thyroiditis
- ·Graves' disease
- ·Other autoimmune diseases
This list shows possible causes — not a diagnosis. Only your doctor can correctly interpret your result.
🩺 Questions for Your Doctor
- →Does this value confirm an autoimmune thyroid disease?
- →Should my thyroid function be checked regularly?
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Medical Disclaimer
The content on this page is for general information only and does not replace professional medical advice, diagnosis, or treatment. Always consult your doctor or pharmacist for health-related questions. Lab values should always be assessed in the context of your personal medical history.