Anti-TPO (Thyroid Peroxidase Antibody)

No special prep required, but be aware that thyroid antibody levels naturally FLUCTUATE — they can vary significantly between draws. A single normal result does not definitively rule out Hashimoto’s if clinical suspicion is high. The STTM community notes that any detectable antibodies may be clinically significant, even below the lab’s flagged threshold. A TPO Ab of 30 IU/mL may be ‘negative’ by lab standards but represent early autoimmune activity. Retest every 3–6 months when tracking interventions. These notes reflect common practices in thyroid/functional medicine communities.

Reflects common practices in thyroid, BHRT, and functional medicine communities. This may differ from standard clinical guidelines. Not medical advice — always discuss with your provider.