Thyroid

Thyroid Peroxidase (TPO Antibodies)

TPO antibodies show whether your immune system is mistakenly attacking your thyroid. Elevated levels are a red flag for autoimmune thyroid conditions like Hashimoto’s or Graves’. Even if your thyroid hormones look “normal,” rising TPO suggests your body is laying the groundwork for future issues — often triggered by stress, infections, gut problems, or environmental toxins.

Unit
[IU]/mL
Health impacts
Mood · Energy

In your dashboard

Your trend, against your optimal range.

Example data · how your trend would appear once you test

At every level

What we'd do at any value.

Exploring

17.0[IU]/mL

LowOptimal 0.0–34.0High

In your optimal zone

Habits that hold this position.

No specific guidance for this zone yet. We're working on it and will update this soon.

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QuestTest code: 5081$7
LabCorpTest code: 006676$22
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For educational purposes; not a substitute for medical advice, diagnosis, or treatment.