Vitamin D Blood Test

Our Vitamin D Blood Test in Epsom measures the amount of Vitamin D in your blood to assess whether you’re getting enough for strong bones, healthy immunity, and balanced energy levels. It can identify both mild and severe deficiencies, helping guide whether you need supplements or lifestyle changes.

Common symptoms include fatigue, low mood, muscle weakness, joint pain, frequent illness, and poor concentration. Many people in the UK have low levels - especially during winter - because sunlight is the main natural source of Vitamin D.

Common signs include fatigue, weakness, low mood, tingling in hands or feet, brain fog, muscle aches, or poor concentration. If you’re vegetarian, vegan, or spend little time outdoors, you’re more at risk of low levels.

Vitamin D supports bone strength, muscle health, immune defence, and energy. Deficiency can increase your risk of osteoporosis, frequent colds, and chronic fatigue, making it one of the most important nutrients to monitor.

You should consider a Vitamin D blood test if you:

• Spend little time outdoors
  
• Always use strong sun protection
  
• Have darker skin (which reduces Vitamin D absorption)
  
• Feel tired or low in energy
  
• Have bone or joint discomfort
  

It’s also useful if you’re taking supplements and want to check your dosage is right.

Results are usually ready the next working day and sent securely by email with a doctor-reviewed explanation. You’ll also receive a text message password for safe access to your results.

For most people, testing once or twice a year is enough - ideally in spring and autumn to monitor seasonal changes. If you’re treating a deficiency, your doctor may recommend retesting every 3–6 months to track improvement.

Yes. However, it’s best to avoid taking your supplement on the morning of your test to ensure an accurate reading of your true Vitamin D level.