
Thyroid Peroxidase Blood Test
- This Thyroid Peroxidase test can indicate if someone may be more likely to develop an underactive thyroid.
£29.99
*All tests are tailored for one person per account. If your family/friends would like to use our tests, please ask them to order separately. After ordering you’ll receive email from MMH to complete setup, repeat buyers won’t receive an email but can check the status of their order by logging in here. Please note: these tests are only available for people aged 18 and over.
Tests are delivered within 3 – 5 working days via Royal Mail.
*Only take this test if you have subclinical hypothyroidism
Why take this test?
If you’ve been diagnosed with subclinical hypothyroidism this test will be able to tell you if you have an increased chance of developing an underactive thyroid. This test will also tell you if an underactive thyroid is likely caused by autoimmune disease.
What is subclinical hypothyroidism?
- When a person’s thyroid tests show a raised level of TSH but a normal level of free T4.
- People with subclinical hypothyroidism and raised TPO antibodies are more likely to develop an underactive thyroid than those with normal levels of TPO antibodies.
- The term subclinical hypothyroidism only applies to people who have not been diagnosed with a thyroid condition. Subclinical hypothyroidism is also sometimes called mild hypothyroidism.
What are TPO antibodies?
- TPO stands for Thyroid Peroxidase.
- They are a protein found inside your thyroid gland.
- High levels of TPO antibodies can indicate that someone may have an autoimmune disease affecting the thyroid.
What do my TPO antibody results mean?
A result of 35 or above:
You have a raised level of TPO antibodies. This suggests that you may have a higher chance of developing an underactive thyroid in the future. If you have already been diagnosed with an underactive thyroid, this suggests that this condition is caused by an autoimmune disease affecting the thyroid.
A result of 34 or below:
Your TPO antibody levels are normal. Your chances of developing an underactive thyroid are lower. If you’ve already been diagnosed with an underactive thyroid then this result does not indicate whether or not this was caused by an autoimmune disease.

Easy home testing
A simple finger-prick blood test that you can do from your own home and receive your results via an online dashboard. No syringes, no doctor visits and no time off work required.

Results you can trust
This test is analysed by an award-winning NHS laboratory.

Personalised advice
You’ll have a personalised online dashboard and evidence-based advice on how you can make positive changes.
Key features

Test your TPO antibody levels

Results returned in 2 days

Results via an online dashboard


Dedicated NHS laboratory

All materials for sample collection

Prepaid shipping included
Dedicated NHS laboratory
How it works

Take your test
Order your preferred test online and take your blood sample

Post your results
Post your sample back to the laboratory in the provided packaging.

Reveal your results
Find out your results within 2 working days by simply logging into your online dashboard.
Dr Katie Stephens
“This test is most useful for people who have had thyroid function tests that were abnormal. The main time we would suggest having this test is if you have been specifically diagnosed with ‘subclinical hypothyroidism’ (when the thyroid results are only somewhat abnormal – the TSH is raised but T4 is normal). In these cases, having a positive TPO antibody result predicts that you are more likely to develop full blown hypothyroidism in the future, and you may benefit from closer monitoring if you are not taking thyroid medication.”

Your personal dashboard
The results of your test are presented to you on an online dashboard designed by NHS clinicians. The dashboard includes different charts and views to help you easily understand your results.
Testimonials
“Turnaround time was impressive and I now know that the Pfizer vaccine has triggered an antibody response. As a clinically extremely vulnerable patient taking immunosuppressants for kidney disease, this gives me some confidence to slowly reintroduce myself into society. I was hesitant to use online services from private clinics but I knew you could be trusted when I saw you are run by the NHS.”
Jeannie M.
Taking a blood sample
What comes in the box?
Inside every box, there will be 1 x vial, 3 x lancets, 2 x alcohol wipes, 2 x plasters, 2 x cleaning wipe, 1 x blood collection instructions and 1 x prepaid envelope.
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