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Vitamin D Test

Find out if you are deficient in this vital vitamin with a simple vitamin D blood test carried out using a finger prick kit in your own home.  

Vitamin D is essential for maintaining strong bones, but there is growing evidence that it also plays key roles in boosting your immune system, muscle function, energy levels and reducing inflammation to name but a few.

As the main source of vitamin D is sunlight, it is estimated that up to half of all adults in the UK could be deficient in this essential vitamin.

Our vitamin D deficiency test kit makes checking your levels privately, fast, affordable and convenient.

Test cost:
£39.00
Test type: finger prick
Estimated turnaround
2 days
From receipt of sample

Why take a vitamin D test?

  • To improve your energy levels
  • To reduce the risk of bone injuries
  • To boost your immune system
  • To answer the question: “Am I vitamin D deficient?”
  • To check you are not over-supplementing

Benefits of Vitamin D Testing

There are several potential symptoms of a vitamin D deficiency, including lethargy and generally lacking in energy.

By taking a simple finger prick blood test to check your vitamin D levels, you can easily identify any deficiency and then, more importantly, take the necessary steps to address it, usually by taking supplements. The impact these changes then make to your numbers can be tracked through your online personal health dashboard.

By eradicating a vitamin D deficiency, you could enjoy benefits including improved energy levels, a reduced risk of bone injuries and an improved immune system.

Included in this test

Vitamins & minerals

Tested biomarkers
  • Vitamin D (25 OH)

How it works

Collect sample

We will send you a finger prick kit to use at home

Post sample

Pop your sample in the post to us using a pre-paid envelope

Online results

View your results on your secure personal health dashboard

What our customers say

Forth really helped me understand issues that I was having, which in the end turned out to be problems with iron absorption. Without their test I would never have known this. I now have the knowledge I need to improve.

Sean Conway

I'd put off getting regular blood tests before because of the long-winded process of a GP visit. Forth has changed all that. The process is very quick and very easy, with thorough, well-explained results delivered to your inbox within days.

Alice Hector

As a former Olympic cyclist I always wanted to look after my health. This has never changed to this day but become a lot easier via Forth, it’s the only way to really understand your own body. 

Brian Smith

I was keen to use Forth’s service to help monitor my haematological markers in particular since I've had problems in the past and by the time they are picked up by the GP I'm normally feeling unwell.  The test was quick and easy to do and results were back very quickly. The results are also incredibly accurate, being almost identical to those from tests done by my GP the same day.

Alice Lethbridge

I enlisted the help of Forth to help me get to the bottom of my current health concerns. The test was really easy to and my results were available within day. Using Forth has helped me take the action needed to get my hormones back on track.

Holly Rush, 39

I suffer from a hereditary condition which causes my body to store too much iron.  My biggest issue before using Forth was getting an appointment with my GP.  Now using Forth I can track my iron quickly and easily and take action before levels start to affect my health

Mark Threfall, 29

I ran my first marathon in 2014 which left me feeling exhausted and constantly unwell. What I didn’t know then was that my iron and vitamin D levels were incredibly low.  By using Forth to test key biomarkers has put me in control of the areas I need to improve.

Jude Peck, 42

As a working mum, I often find myself training ‘tired’ as the demands of day-to-day life take their toll.  Forth has enabled me to gain a valuable insight into what is happening ‘under the surface’, so I  can adapt my training and lifestyle.

Kate Allan

Taking the test is simple just make sure you follow all the instructions so you follow the correct procedures. The customer service is second to none and the results are easy to understand and follow.

Matthew Bottrill

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