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Vitamin D Test

By Forth

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.

Vitamin D deficiency in the UK is very common. 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. A blood test for vitamin D levels is therefore essential.

Our vitamin D deficiency test kit makes checking your levels privately, fast, affordable and convenient. Simply collect your sample at home and send your vitamin d test direct to our accredited lab for analysis. Accurate results will be available within 48hrs on your secure online dashboard. 

Key benefits when using Forth’s tracking service

Fast & accurate

Fast & accurate analysis from accredited laboratory


Tests can be done at home


Secure access to online results

Online dashboard

Online dashboard which tracks results over time

Included in this test

Vitamins & minerals Markers
  • 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