Blood test
Thyroid Check
How well your thyroid is working — the gland in your neck that sets the pace of your metabolism.

What it is for
- Thyroid Check
Why people check it
A thyroid that works too slowly or too fast is hard to tell apart from everyday tiredness or stress. A blood test is the clear way to know.
- Thyroid Check
Who it is for
People living with type 1 diabetes, Addison's disease or coeliac disease, and people taking medicines such as lithium or amiodarone, are advised to check regularly. A slow thyroid is also more common in women over 60 and during pregnancy.
- Signs
When it works too slowly
- Tiredness
- Feeling the cold
- Weight gain
- Dry skin and thinning hair
- Poor memory and concentration
- Low mood
- Signs
When it works too fast
- Unexplained weight change
- Sweating
- Tremor
- Feeling the heat
- Lower libido
How to give your sample
The app shows which ways are open for this test before you pay.
A kit at home
A finger-prick kit by post, with the return postage paid. The app walks you through it.
A collection point
A blood sample taken at a collection point near you, found from your postcode in the app.
Someone comes to you
A professional takes the sample at your home or office, on the day you choose.
The result arrives in the app.
It is yours — keep it, or send it to the doctor of your choice: only a doctor can say what it means for you. This page explains what the test is for; it does not replace a consultation.
Create your account