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Our vitamin D tests, also known as vitamin D (25-OH) tests, are used to monitor the levels of vitamin D in the body to check whether they are within the recommended ranges.


Excessive fatigue and tiredness are common symptoms of a deficiency in vitamin D.


Find out what the test includes.


Vitamin D plays an important role in regulating the body’s calcium and phosphate levels, which is used for keeping muscles, bones and teeth healthy and strong. It is made in our skin but can also be found in certain types of food.

The liver processes vitamin D into a chemical called 25-hydroxyvitamin D, also known as, calcifediol which enables it to be used by the body. The test measures the levels of this chemical in order to accurately assess your body’s available supply of vitamin D.

Many people living in the UK are deficient in vitamin D due to low levels of sunlight, but are not aware since it is not usually monitored.

What is a Vitamin D test?


The vitamin D test involves a self-administered finger prick blood test, which is collected in a vial and returned via post. The test can be taken from the comfort of home. The test requires a minimal amount of preparation, with results available in just a few days.

The test measures your body’s level of vitamin D. If the level is too high, it can lead to problems with bone and kidney problems.

What is included in a Vitamin D test?


The active vitamin D test kit includes:

  • 1x finger prick kit and blood collection vials

  • 1x set of instructions

  • 1x pre-paid, Royal Mail tracked service self-adhesive label

  • Results processed by a UKAS/CPA accredited laboratory within 8 days

  • Access to your detailed results online via your My Wellness account

  • Access to a 24/7 GP Helpline for one year


Other tests


Did you know we also offer other individual health tests? If you are just looking to take a test for one particular area of your health, we provide the following individual home test kits:

We also offer a more comprehensive health MOT kit which includes a bundle of tests for just £89.


*This test is not suitable for under 40s

Call us today on freephone 0808 168 2539

Lines are open 24/7.  Calls may be recorded for quality and training purposes.

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