Vitamin D Test
Answer all questions honestly and as accurately as you can for the best results.
Question 1 of 10
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Rarely spend time outside in daylight?
Consistently use sunscreen or cover skin?
Consume less than 2 servings of fortified dairy/fish weekly?
Have dark or very pale skin?
Over age 70?
Diagnosed with Crohn’s or celiac disease?
Take medications like steroids or anticonvulsants?
Frequent bone, muscle, or joint pain?
Often feel fatigued, weak, or depressed?
Recent low-impact fractures or frequent falls?
FAQs
What is a vitamin D test and what does it measure? 
A vitamin D test measures the level of vitamin D in your blood. It helps assess whether you’re getting enough of this essential nutrient, which is important for bone health, immune function, and mood regulation.
Why should I get my vitamin D levels tested?
If you often feel tired, have weak bones, muscle aches, or frequent infections, low vitamin D could be a factor. People living in the UK are especially prone to deficiency, especially in winter months.
What are the symptoms of vitamin D deficiency?
Common symptoms include fatigue, bone or muscle pain, low mood, weakened immunity, and slow wound healing. Severe deficiency can lead to conditions like rickets or osteomalacia.
How is a vitamin D test done?
It’s a simple blood test that measures your levels of 25-hydroxyvitamin D, the best indicator of your body’s vitamin D status.
Do I need to fast before the test?
No fasting is usually required for a vitamin D blood test, but it’s always best to follow the instructions provided with your testing kit or by your healthcare provider.
How long do vitamin D test results take?
Results are typically available within a few days after the lab receives your sample. Online services often provide results through a secure portal.
What do normal vitamin D levels look like?
Generally, a level of 50 nmol/L or higher is considered sufficient. Levels below 30 nmol/L are typically classified as deficient.
What causes low vitamin D levels?
Low sunlight exposure, poor diet, darker skin tones, obesity, and certain medical conditions can all contribute to vitamin D deficiency.
How can I raise my vitamin D levels if they’re low?
You can increase your vitamin D through safe sun exposure, diet (e.g. oily fish, eggs), and supplements. A healthcare provider can recommend the right dosage based on your test results.
Is the vitamin D test confidential?
Yes. All testing through HealthTest.co.uk is confidential, and your data is handled securely under UK data protection laws.