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Suitable for vegans
Suitable for vegetarians
Suitable for use during pregnancy
Vitamin D Test Kit + Free Vitamin D Oral Spray
At-home health check

COVID-19 Update: Our labs are still operating. However, due to high demand and changes to operating procedures, it may take up to 4 weeks to receive your results.

Instructions on how to redeem your free Vitamin D Oral Spray will be provided once you complete your test.

We’re proud to work in collaboration with Sandwell and West Birmingham trust to offer you a complete vitamin D testing service which can be completed from the comfort of your own home.

  • Easy to use home vitamin D test kit
  • Accurate and detailed vitamin D results
  • Analysis carried out by City Assays laboratory
  • Personalised supplementation plan based on your results
  • Complimentary DLux Vitamin D Oral Spray at a strength relevant to your levels upon completion of your test
  • About


    Check to see if you're one of the over 10 million people within the UK who suffer from vitamin D deficiency. Vitamin D is essential to support immunity, strong bones and muscle function.

    This test checks your stored D3 and D2 levels which represents the most effective marker for checking deficiency.

    Your test results will be sent via email directly to your and BetterYou. This enables us to follow up with a tailored supplementation plan for you and an explanation on what your test result actually means.

    Our vitamin D testing service comes with free UK postage.


    Usage Single use
    Biomarkers Tested 25-hydroxyvitamin D (Stored vitamin D)
    Testing Method Liquid chromatography mass spectrometry

    Importance of checking your vitamin D levels

    Approximately 1 in 5 people within the UK have are low or deficient in vitamin D. 

    With our increasingly indoor existence and changing diets, it’s becoming harder for us to get our required vitamin D from the sun alone

    A test should be considered by everyone as it helps establish if your current lifestyle and diet is providing as much vitamin D as you think it is.

    Who needs it

    While the test is suitable for everyone, people within the Department of Health’s “at-risk” groups should strongly consider checking their levels as they have an increased risk of vitamin D deficiency.

    • All pregnant and breastfeeding women
    • Infants and young children under 5 years of age
    • Older people aged 65 years and over
    • People who have low or no exposure to the sun
    • People who have darker skin
  • Directions

    How to use

    We send the testing kit out for you to use at home. All you must do is place four blood spots onto the collection card from a quick and painless nick of the finger. Full instructions are included in the pack you will receive.

    Using the prepaid envelope, the collection card is then sent to City Assays, who analyse the sample for Sandwell and West Birmingham trust.

    From the spots of dried blood on your sample card, the laboratory at City Assays uses a liquid chromatography mass spectrometry method to measure the Vitamin D in your blood. They measure for Vitamin D2 and D3, reporting the total and D2 and D3 results.

    The results are supplied within 10 working days of the lab receiving your sample.

    The results are emailed directly to you and BetterYou. From this, we will provide you with a bespoke supplementation plan to help increase or maintain your levels. You will also receive a discount code for a complimentary DLux Vitamin D Oral Spray relevant to your results, which you can redeem through our website.


    Keep out of reach and sight of children.


    This test is not a substitute for seeing a doctor. If you are at all unsure about your results, please consult your doctor or medical professional.

    For extremely low or high levels, a member of the Sandwell and West Birmingham Trust will be in contact with you to discuss your results.

  • Suitable for
    Suitable for
    • Adults
    • Infants and children over age of 1
  • Ingredients


    Contained within the pack is everything you need to take a blood spot sample from your finger tip.

    The pack includes full and clear instructions with a postage-paid returns envelope (UK only) to post your results to the lab.

  • Shipping

    Delivery Information

    There may be a small delay in receiving your order. Please allow a couple of extra days for delivery – Read our full COVID-19 update

    Location Cost Delivery Time
    UK From £1.95 1 – 5 Days
    European Union From £7.95 3 – 5 Days
    Rest of World From £8.95 7 – 10 Days

    Free standard delivery on UK orders over £30

    Free next-day tracked delivery on UK orders over £75

    Orders are dispatched Monday – Friday. Order before 12 noon (GMT) for same-day dispatch.

  • FAQs
      When is the best time to test?

      For convenience, we suggest you collect your sample first thing in the morning. This helps get an accurate understanding of your level that has not been influenced by time of day or intake of food.

      While your vitamin D levels may be higher in the summer due to the natural increase in sunlight, there is still no ‘best’ time to test. Ensuring your levels are optimal throughout the entire year will provide you with the most health benefit.

      How is my blood sample collected?

      The test is carried out using dry blood spot samples. This means using a simple finger prick to leave 4 spots of blood on a card which is then sent to the lab for analysis. The kit will be sent to your chosen address along with full instructions and a pre-paid returns envelope for your sample.

      Is there any difference in your tests?

      Our vitamin D tests differ from our Iron and B12 tests due to the collection method and how you receive your results. Ultimately, they each provide you with a detailed picture of your levels but use different analysis methods.

      How will my data be stored?

      We understand the importance of data security when dealing with sensitive data such as biometric testing. Your results will be securely processed and stored on secure servers.

      If taking a vitamin D test, your results will be communicated via email, if taking an Iron or B12 test, your results will be available via a secure online portal.

      By purchasing and completing the tests you agree that your data will be shared between BetterYou and our testing partners.

      What lab will process my sample?

      The laboratories we partner with are UK based, accredited and meet regulatory standards. They are some of the largest private labs in the country but also work directly with the NHS.

      How often should I take the blood test?

      We would recommend testing at different times of the year to establish your year-round levels. We would suggest a maximum of 4 times per year, every 3-4 months.

      Can I get this test done for free by my GP?

      Blood tests can be carried out by your GP but they often take a long time to complete and you are rarely given detailed results. By using one of our tests you get a bespoke supplementation plan as soon as your results are available and it is easy to track your results over time. If you’re at all concerned with your results, you can take them to your GP for further analysis.

      Do I need to stop supplementing before testing?

      It is completely up to you if you want to stop supplementing before taking a test. If you are supplementing, by taking a test you will establish if you need to up or reduce your dosage but if you decide to stop supplementation before testing, you will get a greater idea of your baseline levels from diet alone.

      If you do wish to find your baseline dietary level, we recommend a washout period of 2 weeks (Iron and B12) and 4-6 weeks (Vitamin D).

      Always consult your GP or healthcare professional before making a change to your supplementation plan.

      Are the kits easy to use?

      Our at-home kits are incredibly easy to complete. They allow you to quickly and easily take your sample without the need for a professional or visit to a GP surgery/clinic.

      Why should I choose BetterYou at-home health checks?

      By using a BetterYou at-home health check you get to see an accurate insight into your levels of a specific nutrient. Not only this, but we also provide you with a detailed supplementation plan included within the price to help you maintain or elevate your levels for optimal health.

      We will also provide you with a complimentary oral spray to help you kick-start your journey to optimal health, all included in a single one-off price.

At a glance

Accredited analysis
Accurate results
Complimentary supplement
Easy to use
Personalised supplementation plan

What customers say

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