Above the range
Common causes of a high Thyroid Peroxidase Antibody (TPO Ab)
- Hashimoto thyroiditis
- Graves disease
- Other autoimmune thyroid disease
All tests · Thyroid Function · Thyroid Peroxidase Antibody (TPO Ab)
Above the range
What causes a high Thyroid Peroxidase Antibody (TPO Ab)?
Normal range < 35 (negative) IU/mL (< 35 kIU/L SI). Specimen: Serum. See the full Thyroid Peroxidase Antibody (TPO Ab) reference page for critical values and nursing considerations.
What is the normal range for Thyroid Peroxidase Antibody (TPO Ab)?
The standard teaching reference range for Thyroid Peroxidase Antibody (TPO Ab) is < 35 (negative) IU/mL in conventional units, or < 35 kIU/L in SI units. This value is measured in serum.
| Specimen | Serum |
|---|---|
| Conventional range | < 35 (negative) IU/mL |
| SI range | < 35 kIU/L |
| Panel | Thyroid Function |
Full details, including nursing considerations, on the Thyroid Peroxidase Antibody (TPO Ab) normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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