A clinic blood test that checks your vitamin D level, for anyone who would rather have blood drawn by a professional than use a finger-prick kit.
1 biomarker as listed by Better2Know.
Vitamin D helps your body absorb calcium and other minerals; low levels are linked to weakened bones, aches and a higher risk of infections, and people who get little sun, have darker skin or spend most of their time indoors are more likely to be affected.
At £135, this clinic test costs far more than any of the vitamin D tests we compare it with, whose prices run from £8 to £50, and it is £80 more than Better2Know's own finger-prick home kit for the identical single marker. The only difference is the collection method: a supervised venous draw here against a self-administered finger-prick in the home kit.
It still scores well for clinical depth and clarity, since it delivers exactly the marker it promises and the listing is detailed, but value for money is low given how far the cost sits above comparable tests, and results and follow-up scores only moderately because the result is not reviewed by a doctor as standard.
This may suit someone who specifically wants a nurse or clinician to take the blood sample, for example if you are not comfortable with a finger-prick kit or want the reassurance of a clinic visit.
For most people, Better2Know's own Vitamin D Home Test Kit checks the same single marker for £55, and several other providers, including Medichecks and YorkTest, price equivalent tests in the high £30s to low £40s, all considerably less than this clinic option.
A clinician takes a venous blood sample from your arm at a clinic of your choice, or a nurse can visit you at home; the provider also sells a separate at-home finger-prick kit for the same marker at £55. The sample is sent to the lab for vitamin D analysis, with results typically available within about a day of the lab receiving it, viewed through Better2Know's online patient area. The provider does not state that results are reviewed by a doctor as standard, though you can discuss them with a Better2Know doctor afterwards if you wish.
Better2Know's clinic Vitamin D Test costs £135, well above the £49 median across the vitamin D tests we compare it with and more than double the highest-priced peer we list, Forth's £50 home kit. Better2Know's own finger-prick home kit tests the identical marker for £55, so the extra cost here buys a supervised blood draw rather than a different result. As with the home kit, there is no doctor review as standard.
The listing publishes a detailed description, the full biomarker list, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.
A single-marker test measuring exactly what it sets out to; depth is not the point of this comparison group.
A blood sample taken at home by a visiting nurse or phlebotomist; with a venous or clinic option as well; a home nurse visit is offered; results in around 1 days, well ahead of the vitamins norm of 3.5.
Results are not doctor-reviewed and no consultation is included; the provider does not describe the report format.
Trustpilot 4.2 from 775 reviews; CQC registered; trading 18+ years.
£135.00 against a comparison-group median of £49.00 (+176%).
Calculated 13 September 2026 from the facts we hold about this test and provider, using our published scoring formula. Scores are not hand-edited.
This test belongs to our Vitamin D test comparison group. See how it stacks up against equivalent tests from other providers.
Below-median price, but not the cheapest vitamin D test
Checks your blood level of vitamin D, which is commonly low in people who spend little time outdoors, have darker skin or are over 65. A simple single-marker test suited to anyone wanting a quick, low-cost deficiency check.
Measures both vitamin D2 and D3
A single blood test measuring total vitamin D (D2 and D3 combined), used to check for deficiency or to monitor supplementation.
Priciest vitamin D test in this comparison group
This is a single blood test for vitamin D, a nutrient linked to bone and immune health that is commonly low among people in the UK, particularly in winter. It suits anyone who wants to check their level rather than guess whether they need to supplement.
Vitamin D check priced above Medichecks' own £39 version
This single-marker blood test measures vitamin D, commonly checked to assess deficiency that can affect energy, bone health and mood. Suits anyone wanting a quick vitamin D check, including those with limited sun exposure.
At the group median, far from the cheapest option
A single-marker blood test measuring vitamin D levels, relevant given how common low vitamin D is in the UK, especially over winter.
Priced right at the median for vitamin D tests we track
A single-marker blood test measuring vitamin D (25-OH), for checking levels linked to bone health, immune function and general wellbeing.
Cheapest vitamin D test among eight we compare
A rapid finger-prick test checking whether vitamin D levels are sufficient, insufficient or deficient, with a result in minutes. Suits anyone concerned about low vitamin D who wants a quick, low-cost check.
At-home vitamin D test, close to the group median
An at-home blood test measuring vitamin D levels, relevant for anyone with low sun exposure, a vegan diet, or a dairy allergy who wants to check for deficiency.
Vitamin D check priced below most single-marker rivals
An at-home finger-prick test measuring vitamin D levels. Suited to a quick standalone check for people concerned about deficiency.
Priced close to the vitamin D test group median
A finger-prick home blood test that checks your vitamin D level, useful if you spend little time in the sun or have symptoms of a shortage.
Most expensive Vitamin D test in our comparison group
A single blood test measuring Vitamin D (25-OH), commonly used to assess whether your level is low, adequate or high. Suited to anyone monitoring bone, muscle or general health.
Vitamin D self-test is a semi-quantitative rapid test for detecting vitamin D in blood, which is considered the most accurate way to understand vitamin D levels.
Below-median price, but not the cheapest vitamin D test
Checks your blood level of vitamin D, which is commonly low in people who spend little time outdoors, have darker skin or are over 65. A simple single-marker test suited to anyone wanting a quick, low-cost deficiency check.
Measures both vitamin D2 and D3
A single blood test measuring total vitamin D (D2 and D3 combined), used to check for deficiency or to monitor supplementation.
Priciest vitamin D test in this comparison group
This is a single blood test for vitamin D, a nutrient linked to bone and immune health that is commonly low among people in the UK, particularly in winter. It suits anyone who wants to check their level rather than guess whether they need to supplement.
Vitamin D check priced above Medichecks' own £39 version
This single-marker blood test measures vitamin D, commonly checked to assess deficiency that can affect energy, bone health and mood. Suits anyone wanting a quick vitamin D check, including those with limited sun exposure.
