Most standard thyroid tests check TSH only and miss the bigger picture. Get the full panel of TSH, Free T3 and Free T4 without a GP referral. Walk in, get tested, results delivered privately to your inbox.
The thyroid drives energy, metabolism, mood, weight regulation and temperature. Most standard tests check only TSH, the pituitary signal. They don't measure the actual hormones doing the work, Free T3 and Free T4. That's why so many Australians get told their thyroid is "fine" while still feeling fatigued, foggy, cold or low. The MediTests Thyroid Function Test measures all three from one blood draw.
Australians estimated to be living with an undiagnosed thyroid disorder, per the Australian Thyroid Foundation.
TSH, Free T3 and Free T4. The pituitary signal, the active hormone and the precursor. All three from one blood draw.
Once diagnosed, thyroid conditions are highly treatable. Getting the right number is the first step.
Subclinical hypothyroidism shows up as normal TSH with low Free T3. You can feel awful for years before TSH ever budges. The full panel catches what TSH-only screens miss.
The classic thyroid symptom cluster. If two or more of fatigue, weight gain, brain fog, mood changes or cold intolerance have shifted in the last 12 months, this is the first test to run.
If your GP tested TSH alone and called it normal but you still feel off, you may sit in the subclinical zone. Free T3 and Free T4 often reveal what TSH alone missed.
If you're taking thyroid hormone medication, the full panel shows whether your dose is reaching the active hormone (Free T3) properly. TSH-only monitoring misses this.
Thyroid issues, especially Hashimoto's and Graves', run in families and are more common in women. A baseline check gives you the picture before symptoms appear.
Most thyroid tests check one number. We check three. TSH, Free T3 and Free T4 together give you the complete read your symptoms deserve. One blood draw, one report, the full picture.
Real reviews from Australians who tested their Thyroid privately.
Tired for years. GP kept saying my thyroid was fine because TSH was normal. Ordered the full panel through MediTests, FT3 was bottom of range, FT4 also low. Took it to my GP and finally got proper treatment. Wish I'd done it sooner.
Verified reviewHair was shedding, periods were irregular and I was constantly cold. Ordered the thyroid panel through MediTests, results back in a couple of days. TSH was elevated and FT4 was below range. Booked in with my GP straight after with actual numbers to discuss.
Verified reviewBeen on thyroid medication for 6 years and my GP only ever checks TSH. Wanted to see what my Free T3 and FT4 actually look like. Ordered through MediTests, results in 2 days. Turns out my FT3 was low even though TSH looked fine. Took it back to my endocrinologist for review.
Verified reviewMum and sister both have Hashimoto's so wanted to get a thyroid baseline. MediTests was the easiest route, no GP appointment, walked in the next morning. Results were all within range but now I've got numbers to compare against in future tests.
Verified reviewPut on weight, kept gaining despite eating the same and training as usual. Tested thyroid through MediTests, came back with elevated TSH and low Free T4. Confirmed subclinical hypothyroidism with my GP. Felt validated that something was actually going on.
Verified reviewBrain fog and afternoon energy crashes had been getting worse for months. Wanted to rule out thyroid before going down other paths. Ordered the full panel through MediTests, results in 24 hours. All within range which was useful info, ruled it out and could focus on other things.
Verified reviewThe MediTests Thyroid Function Test measures TSH, Free T3 and Free T4 from one blood draw. The pituitary signal, the active hormone and the precursor. Together they show whether your thyroid is functioning properly, where TSH alone falls short.
The signal sent by your pituitary gland telling the thyroid how much hormone to produce. Elevated TSH typically indicates an underactive thyroid (the pituitary shouting louder), while suppressed TSH suggests an overactive thyroid. The standard screening marker, but on its own it doesn't tell you what's actually happening in your tissues. Reported in mIU/L.
What it tells youThe active thyroid hormone that actually does the work in your cells. T3 controls how your body uses energy, regulates metabolism, body temperature, mood and cognition. Free T3 is the unbound fraction available to tissues. Low Free T3 is the marker most strongly associated with the classic hypothyroid symptom cluster, even when TSH still reads normal. Reported in pmol/L.
What it tells youThe main hormone produced and stored by your thyroid gland. T4 is converted to active T3 in the liver, kidneys and other tissues as needed. Free T4 is the unbound fraction circulating in your blood. It tells you how much raw thyroid hormone your gland is actually producing, regardless of what TSH is signalling. Reported in pmol/L.
What it tells youHow it works
Step one
Get your Thyroid test
Choose your test and complete checkout in minutes. You'll receive an instant PDF pathology request to your inbox. No GP visit, no referral needed.
Step two
Walk into any collection centre
Take your referral to any of our 3,300+ Healius partner collection centres across Australia. No booking, no appointment, just walk in. No fasting required for a Thyroid test.
Step three
Receive your results privately
Your full results report is sent privately to your inbox, typically within 24 to 72 hours. Your TSH, Free T3 and Free T4 levels shown clearly against the Australian reference ranges in a clean PDF you can share with your GP or keep for your own records.
Outcome-driven reasons to know your full thyroid picture. Each one changes how you understand what's driving your symptoms and what to do about them.
TSH, Free T3 and Free T4 together. The pituitary signal plus the actual hormones doing the work. The complete read GPs often won't order in one go.
Many people sit in the "normal TSH but low Free T3" zone. The full panel catches this, where TSH alone calls it normal.
Thyroid hormone medication adjusts T4. The full panel shows whether it's converting to active T3 properly, something TSH-only monitoring misses.
The classic thyroid symptom cluster is fatigue, weight changes, mood shifts, cold intolerance and hair shedding. This test rules thyroid in or out.
If the panel suggests thyroid dysfunction, the natural next steps are antibodies (TPO and TGAb for Hashimoto's) or an ultrasound. This test is the starting point.
Through Medicare, GPs often start with TSH alone and only add FT3 and FT4 if TSH is abnormal. This means many people never get the full read. Now you can.
A NATA-accredited pathology report showing your TSH, Free T3 and Free T4 results alongside Australian reference ranges. Clear, not buried in jargon. Easy to read yourself or take to your GP.
The same format used by hospitals and GPs across Australia. Delivered privately to your inbox.
TSH, Free T3 and Free T4 all shown against their reference ranges. Out-of-range results are flagged so you spot them straight away.
Secure PDF to your inbox. Share with your GP, endocrinologist or naturopath. Or use the numbers to guide your next conversation.
TSH sits at the upper end of the reference range while Free T3 has dropped below the lower limit. This pattern is consistent with subclinical hypothyroidism, where the standard TSH screen alone may not flag an issue. Consider repeating in 6 to 12 weeks alongside thyroid antibodies (TPO and TGAb) to investigate underlying causes such as Hashimoto's thyroiditis. Discuss findings with your GP for clinical correlation and next steps.
We remove the barriers
Private Thyroid blood testing without the GP gatekeeping, the waiting, or the referral hoops.
An overview of how the thyroid works, why testing all three markers matters, what your results mean, and how to act on them. Written for Australians considering a private thyroid blood test.
The thyroid is a butterfly-shaped gland in the front of your neck that produces hormones controlling almost every cell in your body. The two main thyroid hormones are T4 (thyroxine), the storage form, and T3 (triiodothyronine), the active form that does the actual metabolic work. Together they regulate energy production, body temperature, metabolic rate, heart rate, mood, cognition, weight, hair and skin health, menstrual cycles and fertility.
The thyroid is controlled by a feedback loop with the pituitary gland in your brain. When thyroid hormone levels drop, the pituitary releases TSH (Thyroid Stimulating Hormone) to tell the thyroid to produce more. When hormone levels are sufficient, TSH drops. This is why TSH alone is often used as a screening test, on the theory that an abnormal pituitary signal indicates a thyroid problem.
The catch is that the pituitary signal doesn't always match what's actually happening at the cellular level. Many people sit in a "normal TSH but low Free T3" zone where they feel awful but standard testing calls it fine. That's why a complete thyroid panel measures all three together.
TSH is the standard first-line screening test for thyroid function in Australia. Through Medicare, the laboratory will typically perform a TSH measurement first and only reflex to Free T4 (and sometimes Free T3) if TSH is abnormal or if a relevant clinical history is provided on the request form. This is efficient for catching overt hypothyroidism (where TSH is dramatically elevated) and overt hyperthyroidism (where TSH is suppressed).
What it misses:
The MediTests Thyroid Function Test measures all three from one blood draw, removing the screening step and giving you the full picture immediately. This approach is supported by Australian clinical guidance where Free T4 and Free T3 are recommended in addition to TSH for patients with known thyroid disease or where there is a relevant clinical history.
Reference ranges vary slightly between Australian laboratories. Your report will display the specific reference range used by the lab that processed your test. Typical Australian adult ranges are shown below, with reference range data drawn from Australian laboratory standards aligned with the Royal College of Pathologists of Australasia (RCPA) Manual.
| Marker | Reference range | What it shows |
|---|---|---|
| TSH | 0.4 to 4.0 mIU/L (optimal often 0.4 to 2.5) | Pituitary signal |
| Free T4 | 9 to 19 pmol/L | Storage hormone |
| Free T3 | 3.5 to 6.5 pmol/L | Active hormone |
Common patterns:
Discuss any abnormal results with your GP or endocrinologist for clinical correlation and next steps.
Thyroid testing is particularly useful for the following groups:
The most common thyroid conditions you may want to investigate:
If your results suggest any of these, the next steps usually involve thyroid antibodies, a thyroid ultrasound, and a conversation with your GP or endocrinologist.
The MediTests Thyroid Function Test is a private, self-requested pathology test you can buy online without a GP referral. The cost is $79, which covers the pathology request, the lab analysis at a NATA-accredited Australian laboratory, and your results delivered as a secure PDF report.
The process is simple: you complete checkout online and immediately receive a pathology request to your inbox, you walk into any of the 3,300+ Healius collection centres across Australia (no booking, no appointment), your blood sample is collected, and your results are typically delivered to your inbox within 24 to 72 hours of collection. Most results land within 24 to 48 hours, though specialised tests or certain states may take a little longer. No fasting required. If you take thyroid medication, the general guidance is to have your blood drawn before your morning dose for the most accurate read.
The report shows your TSH, Free T3 and Free T4 levels alongside the lab's reference ranges so you can immediately see where you sit on all three markers. The result is yours to keep, share with your GP, endocrinologist or naturopath, or use as the starting point for further investigation.
Get your private Thyroid blood test today. No GP referral. No appointment. The full panel, results typically in 24 to 72 hours.
Check My Thyroid, $79Sources & disclaimer
This information is general and educational, not medical advice. Reference ranges may vary between Australian laboratories. Please consult your GP or qualified healthcare professional for interpretation of your results.
Walk into any of 3,300+ collection centres across Australia. No GP. No referral. No appointment. The full thyroid panel, results typically in 24-72 hours. $79, one-off, no subscription.
Check My Thyroid, $79