Vitamin D (25 OH) £66
This is the key blood test for measuring vitamin D, vital for the absorption of calcium and phosphorous but also for protection against many diseases including cancer and immune disorders.
Vitamin D is a fat-soluble vitamin. It is also known as the 'sunshine vitamin' as the best source of it comes from sun exposure. This test checks for lower than suggested levels.
Because vitamin D controls calcium and phosphate in the body, it is vital in keeping your bones and teeth healthy. That's why getting the right level is particularly useful for pregnant women, breast-fed babies and children under 5.
A lack of vitamin D is very common, especially in the winter months. However, if you're over 65 you may have a greater chance of being vitamin D deficient. Likewise, your vitamin D level might also be low if you're black or Asian, or already suffer from gut, liver or kidney diseases, or have a bone metabolism problem.
The test is for anyone who would like to establish their vitamin D levels, and whether they have a deficiency. The test may prove especially useful to pregnant women, children under 5, people over 65, black or Asian skin types, and people with gut, liver or kidney diseases.
There are several signs of vitamin D deficiency, including fatigue, muscle pain, weakness and cramps, join pain, chronic pain, weight gain, high blood pressure, restless sleep or concentration, headaches, bladder problems, and constipation or diarrhoea.