Skip to main content
This test is ideal if you are wanting to know your Vitamin D levels. If you are deficient in Vitamin D, you may have muscle weakness, pain, fatigue and depression.
Vitamin D Blood Test
Feeling tired and run down can be a side effect of our hectic modern lifestyle, but it can also be an indication that you are suffering from a Vitamin D deficiency. As well as being an indicator of low Vitamin D levels, tiredness and fatigue can also suggest that there is an issue with the thyroid gland anaemia or other disorders.
Why take a Vitamin D blood test
Vitamin D is an important factor in keeping your body healthy. It helps to keep muscles and bones strong and well and is vital for tooth health as it helps the body to absorb calcium. Vitamin D is central to helping keep viruses at bay. Vitamin D naturally occurs in sunlight and in certain foods, such as fatty fish and fortified dairy products.
Vitamin D deficiency can occur as a result of other conditions, including coeliac disease, Crohn’s, kidney and liver disease. Vitamin D deficiency can also arise as the result of a poor diet or being obese. Other factors that contribute to a Vitamin D deficiency are age and skin colour, as well as mobility-related issues that make it hard to get outside in the sunshine.
As the skin ages, it makes less Vitamin D. Darker skin also has reduced capability in making Vitamin D compared to a person with fair skin.
Vitamin D deficiency can cause problems with bone health, as reduced bone density can lead to osteoporosis, where brittle bones fracture more easily. In developing nations children with severe Vitamin D deficiency can develop rickets, but this is a rare occurrence in a developed country.
Treatment for a Vitamin D deficiency can include increasing your exposure to the sun or taking a supplement, or increasing your consumption of Vitamin D-rich food in your diet.
Testing for Vitamin D deficiency
The test can be performed using a small amount of blood from a finger prick which you can do yourself.
How often should I have a vitamin D blood test?
We recommend checking your vitamin D levels annually unless you experience any health changes, or commence a weight loss programme which involves a restricted diet.
Other Questions
- Fatigue
- Tiredness
- Muscle weakness, aches and cramps
- Bone pain
- Depression
- Hair loss
This blood test is to check on:
- Vitamin D levels
For best results (if medically suitable) it is advisable to fast (water is allowed) 12 hours prior to the test which needs to be taken first thing in the morning and posted on the same day on a Monday, Tuesday or Wednesday.
Collection method: Finger prick
Results available: 2-5 days after the sample has reached the laboratory.
Vitamin D
Vitamin D is needed to keep teeth, bones and muscles healthy. Low levels may contribute to osteoporosis, increased risk of bone fractures, muscle weakness, pain fatigue and depression.
How it Works
1. Order a Test
Answer the Questions about why you’re taking the test.
Our nurse will contact you for dates, so they can take your blood sample at your home.
Our nurse will then send your sample to our laboratory.
2. Our laboratory team run the tests
Our skilled laboratory staff conduct your blood tests in a clean and secure environment, ensuring accuracy and reliability.
Each test follows strict protocols to maintain the highest quality standards.
3. Receive Your Results within 7 days
We will email you to inform you that your blood test results are ready.
The email will have a PDF report attached, sent directly to your inbox.
4. Monitor your levels over time
With regular ongoing tests and reports, you can track your results. The reports can be shared with your GP.
Check if you’re improving healthily or where changes could be made.
What’s In The Test?
Home to laboratory kit
- Blood Test
- A prepaid return envelope (UK & Ireland only)
- Two single-use lancets
- One blood collection tube
- One blood collection tube label
- One plastic blood collection tube case
- Two adhesive plasters
- A cleansing wipe
