What should I do to prepare for the Thyroid Blood Test?

do not take biotin containing supplements for 2 days. take your sample in the morning before breakfast if possible (first thing is best). if you take thyroid hormone replacement, it's best to take your dose after sampling if possible.

Who should not use the Thyroid Blood Test?

We do not recommend using this test panel if you: are a child (17 years or under) without supervision from an adult are feeling acutely unwell - e.g. with a cold or flu or if you have new-onset (i.e. within the last few days) symptoms. If you're unsure if you should use this test panel, please contact us for advice.

Personalise your test

Upgrade to Advanced Thyroid Test

Popular

Included in Standard test:

Thyroid Stimulating Hormone
Free Thyroxine (FT4)

Advanced Thyroid Test includes:

Everything in Standard plus

Thyroxine (T4)
Free Triiodothyronine (T3)
Thyroid peroxidase antibody
Thyroglobulin Antibodies

Add to your test

2 add-ons available

Choose how to collect your sample

4 options

Finger-prick blood collection

Free

Total price:

£55.00

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Thyroid Blood Test

Problems with your thyroid gland are common and cause a range of symptoms. They're also really simple to test for with our Thyroid Blood Test.

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Results and doctor's report in 2 days or less

Free, next-working day delivery

All you need to pick up an under- or over-active thyroid

Your questions answered

How can our Thyroid Blood Test help you?

You can think of your thyroid gland as your body's thermostat. Thyroid problems can affect your mood, appetite, gut, weight or skin - amongst many other things.

Our Thyroid Blood Test checks your thyroid hormones which can tell you if you have an underactive (hypothyroidism) or overactive (hyperthyroidism) thyroid.

: The standard Thyroid Blood Test checks the two main thyroid hormones, thyroid stimulating hormone (TSH) and thyroxine (T4), which are all we need to say if you have an under- or over-active thyroid gland.

However, if you'd like a more in-depth assessment of your thyroid gland you should upgrade to our Advanced Thyroid Test.

This advanced thyroid profile adds free T3 and total T4 levels as well as the thyroid antibodies thyroglobulin and thyroperoxidase. These additional markers can help diagnose autoimmune thyroid conditions such as Hashimoto's thyroiditis or Graves' disease.
: Symptoms of thyroid disease include:

Weight loss or weight gain

Increased or decreased appetite

Diarrhoea or constipation

Tiredness and fatigue

Heavy or irregular periods

Changes in mood like irritability or depression

Dry skin and / or hair
: do not take biotin containing supplements for 2 days.

take your sample in the morning before breakfast if possible (first thing is best).

if you take thyroid hormone replacement, it's best to take your dose after sampling if possible.
: We do not recommend using this test panel if you:

are a child (17 years or under) without supervision from an adult

are feeling acutely unwell - e.g. with a cold or flu or if you have new-onset (i.e. within the last few days) symptoms.

If you're unsure if you should use this test panel, please contact us for advice.

What's tested in the Thyroid Blood Test?

You can choose between our Standard Thyroid Test and our Advanced Thyroid Test. Advanced includes all the markers in the Standard Thyroid Test plus additional markers for a more comprehensive assessment of your thyroid gland.

Standard Thyroid Test

The Standard Thyroid Test includes thyroid stimulating hormone (TSH) and thyroxine (T4) which is enough to diagnose a underactive or overactive thyroid gland in most cases.

What's measured: (Click on a test for more info)

Advanced Thyroid Test

The Advanced Thyroid Test includes additional markers for a more comprehensive assessment of your thyroid gland, including free T3 and thyroid antibodies which can indicate autoimmune thyroid disease.

What's measured: (Click on a test for more info)

How it works

Do your test

You'll get your kit next-working day.

Collect your sample at home and send it back to our UKAS-accredited lab for analysis.

Get rapid results

We'll let you know when the lab have received your sample for analysis.

You'll get your results and doctor's report in your online dashboard. You'll also be able to download your formal lab report to share with your GP if you wish.

Improve your health

Numbers are useful but it's what you do with them that counts.

We'll give you advice on how to improve your health based on your results. You can also book a consultation to discuss your results with one of doctors (costs extra).

Learn more about our thyroid test

: do not take biotin containing supplements for 2 days.

take your sample in the morning before breakfast if possible (first thing is best).

if you take thyroid hormone replacement, it's best to take your dose after sampling if possible.
: We do not recommend using this test panel if you:

are a child (17 years or under) without supervision from an adult

are feeling acutely unwell - e.g. with a cold or flu or if you have new-onset (i.e. within the last few days) symptoms.

If you're unsure if you should use this test panel, please contact us for advice.

Get in touch

Still have questions?

If you have any questions, we're here to help. Our customer service team is hands-down the best you'll ever deal with. They're smart, friendly, knowledgeable and will get back to you in a flash.