ORDER
Place your order
Order online, no GP referral required for direct-access tests.
Practitioner grade
Practitioner only
Thyroid autoimmune antibody test
Check for thyroid autoimmunity
Measures TPO and thyroglobulin antibodies to assess for autoimmune thyroid activity.
What it measures
- TPO Antibodies (Thyroid Peroxidase)
- Tg Antibodies (Thyroglobulin)
Test details
CollectionSee product page
Results in5 days
LabNutriPath
Practitioner consult session
A 15-minute consultation. An email link will be included in your order confirmation to make the booking.
Optional 1:1 with our clinical team · $49
Clinician-reviewed report
Plain-English + GP PDF
Direct-access ordering
Clinical interpretation included
Sample to result
From sample to actionable answer.
Direct-access pathology and assessments. Every result is reviewed by a clinician before it reaches you.
RECEIVE
Get your form or kit
Email pathology form, postal collection kit, or assessment link within 1–2 business days.
COLLECT
Collect or complete
At any pathology network, at home, or online, depending on the test.
RESULTS
Clinician-reviewed report
Plain-English summary plus GP-formatted PDF. Share with your practitioner or keep private.
What it measures
TPO Antibodies (Thyroid Peroxidase)
Blood (SST)
Present in the majority of Hashimoto's cases and some Graves' cases. Elevated TPO indicates immune activity against the enzyme that makes thyroid hormone. Often elevated years before TSH shifts.
Reference range: Under 35 kIU/L
Tg Antibodies (Thyroglobulin)
Blood (SST)
Less sensitive than TPO but adds specificity. Elevated Tg antibodies with normal TPO can indicate early autoimmune activity or confound thyroglobulin tumour marker testing in thyroid cancer monitoring.
Reference range: Under 40 kU/L
How it works
Your practitioner will advise on collection. Follow the kit instructions and return your sample as directed.
Warnings: This is a health information tool and is not a diagnosis. Discuss your results with your practitioner before making changes to medication, supplements or treatment.
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Frequently asked.
Common questions about how OptiLabs works: testing, supplements, clinician review, returns and timing.
Are the supplements safe?
All carry an AUST L designation from the TGA. Every order is reviewed by a clinician before dispatch.
Do I need a referral?
No. All tests are available to order directly. Our lab partner is NATA and RCPA accredited, operating as a direct-access pathology service.
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A proper investigation into what's driving your symptoms, with a clinician-reviewed report, not a cryptic lab printout.