Thyroid blood test · Plymouth
Check your Thyroid, from TSH to Antibodies.
Three options, from TSH on its own to Advanced Thyroid with Free T3 and both Antibodies. No GP referral needed.
Why test
A common cause of feeling unwell.
An underactive or overactive Thyroid can cause tiredness, weight change, low mood, feeling cold or hot, and hair thinning. It often builds slowly.
Thyroid Antibodies can turn positive years before TSH changes, which is why Advanced Thyroid includes both.
Good to know
- No fasting needed
- Stop biotin supplements 48 hours before
- Results the next working day
- No GP referral needed
- Prices are on our price list
Choose your test
Choose your test.
Not sure which? Tell us your situation and we will suggest the right test, not the most expensive one.
Thyroid Stimulating Hormone on its own. A good monitoring test if you already take thyroid treatment.
TSH and Free Thyroxine. The most commonly requested thyroid test.
TSH, Free Thyroxine, Free T3 and both Thyroid Antibodies. The Antibodies often turn positive years before TSH does.
What is measured
What the markers tell us.
| Marker | What it measures | Why it matters |
|---|---|---|
| TSH | How hard your brain is telling your Thyroid to work | High usually means underactive. Low usually means overactive, or too much Thyroid medicine. |
| Free T4 | The main Thyroid hormone in your blood | Shows how much hormone is available. |
| Free T3 | The most active form of Thyroid hormone | Helps when symptoms continue despite normal TSH and Free T4. |
| Thyroid Antibodies | Thyroid Peroxidase and Thyroglobulin Antibodies | Point to autoimmune Thyroid disease, such as Hashimoto’s or Graves’. |
Right here in Plymouth
Local care, close to home.
Your blood test is at Tor Clinical Rooms, 3 Darklake View, Plymouth PL6 7TL. Free parking on site, and easy to reach from the A38.
Who it is for
Worth testing if you have…
- Ongoing tiredness
- Unexplained weight change
- Hair thinning
- Feeling unusually cold or hot
- Low mood
- Palpitations
- Family history of Thyroid disease
- On Thyroid medicine and want a check
Before your test
No fasting needed.
Stop biotin supplements for 48 hours before, as they can affect the result.
On Thyroid medicine? Take it as normal. After a dose change, wait 6 to 8 weeks before testing.
Your results
What your results mean.
A result within the range is not always the full story if you still have symptoms. We read your numbers alongside how you feel.
If your Thyroid is not working properly, next steps may include a repeat test, a referral, or medicine through your GP or with us.
Blood tests give information. They do not diagnose a condition on their own. We explain your results in the context of your symptoms, medicines and history.
How it works
Four simple steps.
Book online, by phone on 01752 938102, or by email at Hello@TamarHealth.com.
Book
Pick your test and a time. £25 secures your slot, and the balance is paid in clinic.
Fill in your new patient form
Once you have booked, we send you a form. Tell us which test you want, and share your medical history so we can make sure it is right for you.
Come to the clinic
No fasting needed. Stop biotin for 48 hours before. The sample takes a few minutes.
Get your results
Most results come back the next working day, by email, with a clinician summary in plain English. Anything urgent, we phone you the same day.
Questions people ask
The things people most often ask before booking.
Choosing
What is the difference between the three tests?
TSH on its own suits monitoring once you are stable on treatment. The Thyroid Profile adds Free T4 and is a good first check. Advanced Thyroid adds Free T3 and both Antibodies.
Will you test for Thyroid Antibodies?
Yes, in Advanced Thyroid. Choose it if you have a family history of autoimmune Thyroid disease or ongoing symptoms despite normal TSH.
How often should I be tested?
Yearly if you take Thyroid medicine, and 6 to 8 weeks after any dose change.
What our patients say

Other ways we can help
Book your blood test
No GP referral needed. Most results the next working day.








