Introducing our premium blood tests: The Well Woman & The Well Man!

The Thyroid Blood Test

Thyroid disorders are more common than you’d think. Get insights into your thyroid function with this quick test.

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Finger prick test kit provided
2 biomarkers tested
Results in app within 48 hours
Doctor-reviewed report
Free delivery
18+ only

Is it for me?

Yep, if you want to check if your thyroid may be causing symptoms like:

Being sensitive to cold
Hair loss or thinning
Twitching or trembling
Weight gain

Huge time saver!

'I have an underactive thyroid and monitoring with an at home test was perfect!'


What's tested?

This blood test gives a good insight into whether your thyroid is working normally or not.

Your thyroid is a small gland in your neck which makes hormones. These hormones regulate your metabolic rate (how quickly your body’s cells use energy) and help maintain your core temperature.

Thyroid problems can lead to tiredness, low mood and weight issues, so it’s essential for your health that it’s working correctly.
A hormone made by your pituitary gland that stimulates your thyroid to make thyroxine.
A hormone made by your thyroid. Essential in many of your body’s functions, including metabolism and growth.

Meet our experts

Get to know our in-house clinicians

Dr Leah Gorodi

Medical Lead and GP with a special interest in lifestyle medicine and health prevention

doctor taran toor

Dr Taran Toor

Chief Medical Officer, clinical entrepreneur and GP with an interest in digital health

UKAS accredited

Get your results within 48 hours from UKAS-accredited labs.

Your privacy, guaranteed

Just like your doctor, we take your privacy extremely seriously.

Your data is secure. We use the latest encryption technologies and we’re committed to our data protection responsibilities.

Your data is never sold on, rented out, or shared with third parties for financial advantage.

We work with Care Quality Commission-accredited labs and our blood test kits are all CE-marked.


Problems with your thyroid gland can lead to tiredness, low mood and weight issues, so it’s essential for your health that you know whether it’s working correctly.

Early signs of a potential thyroid problem can include:

  • weight gain
  • weight loss
  • sweating
  • tremors (shaking)
  • difficulty concentrating
  • hair loss
  • dry skin
  • puffiness of your face, hands or feet

'Normal' ranges are specific to you and your body. We'll let you know whether your results fall within a normal range or outside of it once we've processed your results, taking into account variables like your age and biological sex. If we notice anything that’s not quite normal, we’ll let you know right away and guide you through the next steps, including how to talk about your results with your GP.

There’s no need to skip meals or prepare anything major before this test. If you take any medication, speak to your doctor beforehand, as some types of medicine can affect your thyroid function.

If you’ve had any recent X-rays or scans done with contrast dye, speak to your doctor too. The iodine in the dye can affect your results, so you may need to wait a while before testing.

No, you don't need to fast before this test.

Free T4 and TSH are the more commonly tested markers to rule out any abnormalities with your thyroid. However, there are some cases where you could have normal TSH and free T4 levels but still have an underactive thyroid because your T3 is low, in which case, our advanced thyroid test would be better suited and can also rule out autoimmune issues with your thyroid.  

Talk to your doctor before taking this test. Being pregnant can have a noticeable impact on your results, so make sure to check in with your GP first.