Anti-TPO antibodies result checker
Enter your anti-TPO (thyroid peroxidase) antibody level to see whether thyroid autoimmunity (Hashimoto’s) is present, what it means for your future thyroid function, and what to do next.
— IU/mL
Medical disclaimer: This calculator is for general educational purposes only and does not constitute medical advice or a diagnosis. Results are estimates based on the values you enter and standard formulas and reference ranges, which vary between laboratories and between individuals. Always discuss your results with a qualified healthcare professional. If you are experiencing a medical emergency, call 9-1-1.
What Hashimoto’s means long-term. Positive anti-TPO antibodies indicate autoimmune thyroid disease (Hashimoto’s), the commonest cause of an underactive thyroid. Even with a normal TSH today, antibodies raise the lifetime risk of hypothyroidism, so periodic TSH monitoring matters. Antibody levels influence whether borderline (subclinical) results are treated. Low ferritin (iron stores) is common alongside thyroid disease and worsens fatigue and thyroid-hormone conversion — worth checking together.
Get an endocrinologist to review your results — $45
Upload your thyroid or metabolic results and get a written opinion from a PGIMER/AIIMS-trained endocrinologist within 6 hours — what your numbers mean together, what to test next, and what to say to your GP. No referral needed.
Frequently asked questions
What does a positive anti-TPO result mean?
Positive anti-TPO antibodies indicate autoimmune thyroid disease — usually Hashimoto’s thyroiditis, the most common cause of hypothyroidism. It does not mean you need treatment today, but it raises the lifetime risk of an underactive thyroid, so TSH should be monitored over time.
What is a normal anti-TPO level?
Reference cut-offs vary by laboratory; many use around 34 IU/mL as the upper limit of normal. Values above that suggest thyroid autoimmunity, and higher levels make Hashimoto’s more likely. Always check your own lab’s stated range.
Can Ginie Health review my thyroid antibodies?
Yes. A written opinion from a PGIMER/AIIMS-trained endocrinologist costs $45 CAD, delivered within 6 hours, with no referral needed — useful for interpreting your antibodies alongside TSH and Free T4 and planning monitoring.