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Interpret Your Anti-TPO Antibodies Results
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Anti-TPO Antibodies Normal Ranges
Anti-thyroid peroxidase (Anti-TPO) antibodies are autoantibodies that attack thyroid peroxidase, an enzyme essential for thyroid hormone synthesis.
| Reference Range | Unit | Notes |
|---|---|---|
| 0 – 34 | IU/mL | Negative <34 |
Also reported in: kIU/L.
Common Causes of High Anti-TPO
Hashimoto's thyroiditis (most common)Graves' diseasePostpartum thyroiditis
Common Causes of Low Anti-TPO
Not clinically applicable (negative is normal)
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