Get insights into your sleep with a blood test

Stay on top of your health with a home blood test and GP-reviewed results.


per test

How sleep supports your health

Good quality sleep is essential for supporting many areas of your health. It provides you with energy, supports your immune function, repairs damage, and promotes better mental wellbeing.

If you regularly don't get enough sleep, it might affect your:

  • hormone production
  • immune function
  • mood and mental wellbeing
  • memory and concentration
  • weight

Over time, it might increase your risk of high blood pressure, heart disease, and diabetes.

What can this test tell you?

This finger-prick blood test measures a range of factors that can affect how well you sleep. For example, poor sleep is sometimes linked to a nutrient deficiency or an issue with your thyroid function.

What's included in this test?


Vitamin D

Vitamin D supports your bone, muscle, and immune health. Low vitamin D levels are linked to worse sleep quality and a higher risk of sleep disorders, like insomnia and restless legs syndrome.

Note: If you have sarcoidosis (an inflammatory disease) or a condition that affects your parathyroid glands (these regulate calcium in your body), it can make it difficult to interpret your vitamin D results. So in this case, it's best to work with your doctor and get specialist input.



A ferritin test measures the amount of iron stored in your body — it's a useful way to check for iron deficiency anaemia. If you're deficient, it can make you feel over-tired and cause restless leg syndrome, which can affect sleep.


Vitamin B12 (active)

Vitamin B12 is essential for a healthy nervous system and is thought to affect your body's biological clock. If you’re deficient, it can cause tiredness and sleep problems. A deficiency also tends to be more common in insomniacs.

An active B12 test measures the amount of vitamin B12 that's available for your body to use — so it's the best measure of your vitamin B12 status.



Testosterone is a hormone that's essential for both men and women's health. Low testosterone levels might affect your sleep quality and sleep duration.


Advanced thyroid function

Your thyroid is a gland found at the front of your neck that produces hormones. If you have a thyroid issue, it can lead to issues like anxiety, tiredness, and difficulty sleeping.

How it works

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Get your Thriva kit

Order your test online. We'll post your finger-prick blood testing kit the next working day.

Do your test

Do your test

Your kit contains everything you need to do your test and post your sample. See how to do your test

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Get results in 48 hours

Your results, along with a personalised report from a GP, will be available online. Meet our doctors

Your sample will be analysed by a CQC-registered and UKAS accredited lab. This finger-prick test and kit are CE-marked.

Here to support you

With the power of technology and a team of qualified experts, get personalised insights and advice about your health.

Get insights that matter

Get insights that matter

Understand what’s happening inside your body and the impact your lifestyle is having.

Improve your health

Improve your health

Discover evidence-based ways to improve your results and health, along with recipes, supplements, and more — all personalised to you.


Track your health

By understanding your body and what works for you, you can be in control of your health.

Want to know more?


How quickly will I get my order?

We typically send out kits with Royal Mail 1st class on the same working day if ordered Monday-Friday before 1 pm. Orders placed before 1 pm usually arrive the next working day, while orders placed after 1 pm typically take two working days.


Do I need to be in to receive my kit?

No — your test kit is designed to fit through your letterbox, and it doesn't require a signature on delivery.


Are the kits discreet?

Yes, your kit will arrive in plain packaging.

Order your test today


Data Protection

Your data is in safe hands. We use the latest encryption technologies and comply with the UK Data Protection Act 2018. See privacy policy

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Our blood testing kits are CE-marked, and we work with UKAS accredited labs who are registered with the CQC. See labs and accuracy