Baseline thyroid function blood test

This test measures your levels of two key thyroid hormones - TSH and FT4. This can help check for hyperthyroidism or hypothyroidism.

Track your progress with a subscription:

  • See your results change over time with trend charts
  • Make lifestyle changes and see how they improve your health
  • Change what you're testing, pause or cancel anytime


  • Free delivery
  • Test arrives in 2-4 working days

We accept

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How can a baseline thyroid function test help you?

This test will give you a basic view of key thyroid hormone levels, which can help check for hypothyroidism (underactive thyroid) or hyperthyroidism (overactive thyroid). The test checks for two different biomarkers - the thyroid hormones TSH and FT4.

Combined with a GP report and advice, you can begin to understand your thyroid health and any associated symptoms.

Upgrade your test

For more detailed insights into your thyroid function, including checks for thyroid autoimmune conditions, check out our Advanced Thyroid Function Blood Test

What's covered in this blood test?

Thyroid profile (basic)

Learn more

Your thyroid gland produces hormones that help control your metabolism. If it isn't working properly it can cause symptoms such as mood problems and weight gain or loss. A blood test can check for thyroid disorders.

Collection method

Your test kit contains everything you need to collect your sample at home. Our instructions will guide you through it.

How it works

Thriva kit

Do your test

Your kit arrives in 1-2 days. Find out how to collect your sample at home. You’ll need to fill 2 tubes for this test — around 10 drops of blood.

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Get fast, accurate results

Free post your sample to our lab and get your results in as little as 48 hours. Access your GP-reviewed report in your results dashboard.

Blood test results trend on laptop

Support your thyroid health

Our doctors give you evidence-based tips to help you improve or maintain your thyroid health. And you can access articles, podcasts, and recipes.

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Data protection

Your data is in safe hands. We use the latest encryption technologies and take our Data Protection obligations seriously.


What's included in your home testing kit?

our Thriva test kit includes:

- collection tube(s)

- plaster x 2

- return form x 1

- alcohol swab x 1

- lancet x 3

- prepaid envelope x 1

- cleansing wipe x 1

- collection tube label(s)

- protective plastic case x 1


How to collect your sample at home

Learn how to collect your finger-prick blood sample at home by following our instructions. You can access these on the app too. It takes around 30 minutes to complete the process at home.


Will a GP write your report?

Our doctors review your blood test results and upload a detailed report to your account dashboard. They also give you advice to help support your health or manage an existing condition.


How long does it take to get your results?

Our doctors aim to upload your results report to your account dashboard within 48 hours from the lab receiving your sample. Tests containing Omega-3 & 6 have a 10-day turnaround time after posting your sample.


How do you know when your results are ready?

We’ll email or text you to let you know your blood samples have been received, processed, and are ready to view on your results dashboard.