ORDER
Order and referral check
Order your test. We review the order and check whether a referral or other information is required before the next step can begin.
Practitioner grade
NutriPath
Complete thyroid workup with antibodies
NutriPath pathology testing
A blood panel combining thyroid hormone measurements with thyroid antibodies and reverse T3. It brings several measurements together, but the useful starting panel depends on your symptoms, history and current medicines.
About this test
When a simple TSH test returns normal but symptoms persist, when thyroid medication is not producing the expected result, or when you want a comprehensive one time baseline, the extensive thyroid panel is what you want. It measures all the markers that shape the thyroid picture: TSH (the pituitary signal), free T4 (the storage hormone), free T3 (the active hormone), reverse T3 (the inactive metabolite that competes with T3 at receptors), TPO antibodies (catches Hashimoto's), and Tg antibodies (adds specificity to autoimmune detection). Reverse T3 is the critical addition that standard testing misses. Under stress, illness or calorie restriction, your body shunts T4 down the reverse T3 pathway instead of converting it to the active T3. High reverse T3 with a low T3 to rT3 ratio is a common pattern in chronic illness, burnout and long term dieting, and explains persistent hypothyroid symptoms in people whose other markers look fine.
What it measures
- TSH
- Free T4
- Free T3
- Reverse T3
- TPO Antibodies
- Tg Antibodies
- T3 : rT3 Ratio
Test details
CollectionBlood collection provider
LabNutriPath
When to expect your results
3 to 5 days after the laboratory receives your sample
Allow time for order and referral checks, your collection appointment and sample transport. Laboratory processing starts after your sample reaches the testing laboratory.
See the steps from order to results
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
What it measures
TSH
Blood (SST)
The pituitary signal. Context for interpreting thyroid hormone levels.
Free T4
Blood (SST)
The storage form. Most thyroid medication replaces this.
Free T3
Blood (SST)
The biologically active hormone your cells use.
Reverse T3
Blood (SST)
The inactive metabolite. Elevated rT3 blocks T3 at the receptor level and explains persistent hypothyroid symptoms despite normal other markers. The T3 to rT3 ratio is more informative than rT3 alone.
TPO Antibodies
Blood (SST)
Catches Hashimoto's autoimmune activity.
Tg Antibodies
Blood (SST)
Adds specificity to autoimmune detection.
T3 : rT3 Ratio
Calculated
One of the most useful ratios in complex thyroid cases. Low ratio indicates T4 is being shunted to inactive rT3, common in stress, chronic illness, and prolonged calorie restriction.
Your testing journey
From your order to your results.
Order and referral review, sample collection, laboratory analysis and discussing your report are separate stages. Your test’s processing estimate covers the laboratory stage.
ARRANGE
Arrange your collection
Once the required checks are complete, follow the collection form and instructions for the nominated provider. Check appointment and preparation requirements.
COMPLETE
Provide your sample
Attend the nominated collection provider with the required form. Your sample then needs to reach the testing laboratory before processing begins.
RESULTS
Laboratory processing
Once the laboratory receives your sample, it completes the analysis and prepares your report. Discuss the findings with your practitioner alongside your symptoms and health history.
Preparing for this test
Read the instructions supplied for your exact test before collecting. Check food, drink, medicines, timing, storage and return requirements with your practitioner. Do not stop prescribed medicines without advice.
Does the estimate include postage?
No. The laboratory estimate does not include order review, referral checks, delivery to you, the time you take to collect, or transport back to the testing laboratory. These stages make up the full order-to-results journey.
Need results by a particular date?
Check with Evergreen before ordering so the referral requirements, collection timing, delivery and laboratory estimate can be considered together.
Ask Evergreen about timingBefore you order.
Practical questions about choosing, preparing for and reviewing this test.
Do I need a consultation or referral?
Requirements vary by test. Check the ordering options on this page and confirm any referral requirements with Evergreen. A laboratory’s practitioner-referral requirement is separate from whether you need to book an additional consultation.
Should I change medicines or supplements before testing?
Do not stop prescribed medicines on your own. Tell your practitioner what you take and follow the preparation instructions for this test. Timing, fasting and other requirements depend on the sample and markers being measured.
Does the test tell me what treatment I need?
A result is one part of an assessment. A qualified practitioner should interpret it alongside your symptoms, history and medicines. Check whether a results consultation is included in your purchase or needs to be booked separately.
How should I read the reference ranges?
Use the reference intervals and units on your own laboratory report. Ranges can vary with the method and patient factors. A result inside or outside a range does not establish a diagnosis on its own.
Who is the testing provider?
These tests are supplied through NutriPath, a medical laboratory founded in 2011 and based in Burwood, Victoria. NutriPath works through a practitioner-referral system.
When does the turnaround estimate start?
The laboratory estimate is not the time from placing your order. Allow time for referral checks, kit dispatch where needed, sample collection and transport before processing. The estimate varies by test, and specialist or overseas analysis can take longer.
Follow the estimate for your specific test. A quoted 3–5 business days does not include the whole ordering and collection journey.
Where do I find preparation and collection instructions?
Use the instructions supplied for your exact kit. Blood tests may require an arranged collection appointment; receiving a kit does not mean you should draw blood yourself. Saliva, urine, stool and breath tests each have different preparation requirements.
Need help choosing?
Find a test that fits your question.
Compare the sample type and what each test measures, or use the guide to narrow your options.