About this Panel
Vitamin D is an essential fat-soluble vitamin that is essential for healthy bones, control of cell proliferation and differentiation and modulation of immune system. The vitamin is found in only a few foods and may be present as either D2 or D3.
The major natural source of the vitamin is through a chemical reaction in the skin that is dependent on sun exposure.This reaction makes D3. Production of D3 is dependent on your skin pigmentation(darker pigmentation is less effective at northern latitudes) and age, since the thinning of the skin as we get older diminishes the availability of vitamin D precursors. In the UK even prolonged exposure will bring no benefit during the winter months.The wavelength of light required to make D3 is unable to penetrate glass windows.
Our scientists have made available a new dried blood spot collection method that will allow you to collect your sample in the comfort of your own home. This method is particularly suitable for those who dislike, or find it difficult, to give blood.
Vitamin D is responsible for a number of important functions in the body including bone health. Vitamin D2 is obtained from some foods. For this test we measure and report 25-hydroxyvitamin D2.
Vitamin D is responsible for a number of important functions in the body including bone health. Vitamin D3 is present in some foods although our primary source is synthesis in our skin during sun exposure. For this test we measure and report 25-hydroxyvitamin D3.
Who is this panel for?
Vitamin D deficiency is very common in the UK, especially in the winter months, due to lack of exposure to the sun. Sunlight is essential for the chemical reaction that happens in your skin to produce vitamin D – we are unable to obtain a sufficient amount of vitamin D from food to maintain health. During the summer, any surplus vitamin D that you make is stored in your body for use the following winter. If we don’t make sufficient vitamin D during the summer then stores are inadequate for the winter. Age is also a factor in vitamin D since as we get older the thinning of our skin diminishes the availability of the components we need to make it. Poor vitamin D status causes poor bone health and has also been associated with many other diseases. This test is for individuals who are curious about the different types of vitamin D present in their blood.
* Turnaround time measured from when blood sample is accepted in to the Viapath laboratory and does not include weekends or bank holidays.
How It Works
Choose a test panel
Customers are able to select from our ever-growing range of nutritional laboratory tests without a clinician/physician’s referral.
Have your blood collected
Choose to either have your blood taken at the Blood Test Centre at St Thomas’ Hospital in London, or receive a postal pack and have blood drawn by a qualified professional in a clinic of your choice.
Access your report online
Log in to your secure Viapath Nutris account to access your laboratory report with commentary from a registered healthcare scientist.