What is Thyroid Peroxidase Antibody (Anti-TPO)?
Thyroid Peroxidase Antibody is measured as part of a thyroid panel. Your Anti-TPO antibodies are within normal limits, making autoimmune thyroid disease less likely.
What does a high Thyroid Peroxidase Antibody mean?
Your Anti-TPO antibodies are raised. This points to autoimmune thyroid disease (such as Hashimoto's). It does not by itself mean your thyroid is malfunctioning — it's a marker your doctor uses alongside TSH and T4.
Understand your whole report, not just one number
A single value rarely tells the full story — Thyroid Peroxidase Antibody is best read alongside the rest of your panel. Paste your values or upload your report and get a plain-English explanation of every marker, with the important results flagged.