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Complete Vitamin D Test (D2 + D3)
£65.00
This simple at-home bloodspot test is the most accurate way to assess your body’s vitamin D status from sunlight, diet and supplements. It helps identify deficiency, a common cause of fatigue, low mood, weakened immunity and poor bone health, so you can take steps to restore balance and support overall wellbeing.
Sample type: Bloodspot (finger-prick)
Turnaround time: 15 working days
The Complete Vitamin D Test (D2 + D3) is a simple yet highly accurate bloodspot test that measures total vitamin D — the gold standard for assessing vitamin D status from sunlight exposure, diet and supplementation. This test provides a clear picture of whether your levels are optimal, insufficient, or deficient, helping to identify one of the most common and often overlooked factors affecting overall health.
Vitamin D plays a vital role in bone strength, immune function, mood regulation, and metabolic balance. Understanding your vitamin D status allows you to take targeted, evidence-based steps to optimise your health, energy, and long-term wellbeing.
What the test measures:
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Vitamin D₂ (ergocalciferol) – Found in certain plant-based foods and supplements.
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Vitamin D₃ (cholecalciferol) – Produced naturally in the skin through sunlight exposure and found in animal-based foods.
- Order your preferred test
- Receive your kit via post with full collection instructions
- Collect your sample at home and return to lab using provided packaging
- Receive your results once they have been processed by the lab
- If you want an in-depth review of your results to understand the findings, book a Lab Test Results Consultation
- If you would like a personalised Nutrition & Lifestyle Action Plan based on your findings, book an Initial Consultation
- Need help choosing a test? Contact us, or book a free 15-minute Discovery Call with our team
Vitamin D deficiency or insufficiency is widespread, particularly in the UK where sunlight exposure is limited for much of the year.
This test is suitable for anyone who wants to understand their vitamin D levels and support their long-term health. It can be especially useful for:
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Individuals who spend limited time outdoors or use sunscreen regularly
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People living in northern climates with low year-round sunlight
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Those with fatigue or low mood
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People with osteoporosis, joint or muscle pain
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Individuals with autoimmune or inflammatory conditions
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Pregnant women and those planning pregnancy
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Vegetarians and vegans who may not get enough vitamin D through diet alone
Why choose this test?
The Vitamin D (25-Hydroxyvitamin D) Test offers the most accurate assessment of total vitamin D (D2 + D3) status, reflecting both dietary intake and sunlight exposure.
The insights from this test provide a clear foundation for optimising bone health, immune resilience, mood balance, and overall wellbeing through targeted nutrition and lifestyle support.
Frequently Asked Questions
You’ll use the provided finger-prick device to collect a drop of blood on the sample card (called a bloodspot). Full instructions are included in the kit and the sample is stable during postage to the lab.
Optimal levels typically fall between 75–150 nmol/L (30–60 ng/mL), though ideal ranges can vary by individual, season, and health status. Levels below 50 nmol/L (20 ng/mL) indicate insufficiency or deficiency. After you test, we can interpret your results in the context of your symptoms and overall health.
Yes. Vitamin D plays a role in energy metabolism and neurotransmitter balance, which influence mood and cognitive function. Low vitamin D is often linked to fatigue, low motivation, seasonal depression and brain fog.
What Our Customers Say
“I did the finger-prick test at home and it showed I had surprisingly low levels of vitamin D which helped explain my constant fatigue. Quick, easy and very informative!”
– Morgan L
“Got my results within a week of taking the test then Carmen went through the results with me, explaining how my low vitamin D levels were affecting my mood and hormones.”
– Aiysha R
“I was unable to get tested via my GP so I ordered this instead. I was impressed by how simple it was to test from home and how comprehensive the results were.”
– Rubina S
