Vitamin Deficiency Testing in London – Do You Really Need It?
By Tharb Faisl
Vitamin deficiencies are incredibly common – yet they’re often misdiagnosed or overlooked.
If you feel constantly tired, moody, or “off,” the issue might not be stress or age — it might be something missing from your blood.
At Marylebone Diagnostic Centre, our Vitamin & Nutrient Blood Tests help detect hidden causes of fatigue, low mood, immunity issues, poor concentration, and more.
Book Your Vitamin Deficiency Testing in London Today!
What Vitamins Do We Test?
Our most common vitamin deficiency tests include:
Vitamin D
- Supports bones, immune system, mood, and energy
- Deficiency is widespread in the UK due to lack of sunlight
Symptoms of low Vitamin D:
- Fatigue
- Bone pain
- Low immunity
- Depression or SAD (seasonal affective disorder)
- Muscle weakness
Book Your Vitamin Deficiency Testing in London Today!
Vitamin B12
- Supports brain function, red blood cell formation, and nervous system health
Symptoms of B12 deficiency:
- Brain fog
- Numbness/tingling in hands or feet
- Fatigue
- Pale skin
- Mood changes
Folate (Vitamin B9)
- Works with B12 to form healthy red blood cells
- Crucial for women of reproductive age
Symptoms of folate deficiency:
- Anaemia
- Fatigue
- Headaches
- Shortness of breath
- Weakness
Iron & Ferritin
- While not vitamins, these are essential for energy and oxygen transport
- Frequently paired with B12/Folate tests
Symptoms of iron deficiency:
- Breathlessness
- Dizziness
- Restless legs
- Cold hands/feet
- Hair thinning
Book Your Vitamin Deficiency Testing in London Today!
Why Vitamin Deficiencies Are So Common
Even with a balanced diet, modern life makes it harder to get enough nutrients. Common causes include:
- Diets low in animal products
- Limited sun exposure (Vitamin D)
- Digestive issues or absorption problems
- Medication side effects
- Stress and poor sleep
- Long-term fatigue or chronic illness
And many people simply don’t realise they’re deficient until they see the blood test.
Testing from Marylebone, Central London
We offer fast, private vitamin testing from our clinic on Baker Street, minutes from:
- Harley Street
- Kings Cross
- Paddington
- Euston
- Mayfair
No GP referral required
Same-day appointments
Results in 24–48 hours
Combine with hormone or wellness testing
Book Your Vitamin Deficiency Testing in London Today!
“I kept putting it down to stress. But my B12 and Vitamin D were both low. I started supplements and IV therapy – I feel completely different.”
– Layla, 31, Kings Cross
FAQs – Vitamin Blood Testing in London
Book Your Vitamin Deficiency Test Today
Fast, private testing
Trusted by London professionals and health-conscious individuals
No GP referral needed
Walk-ins welcome on Baker Street
🎯 Book Now at Marylebone Diagnostic Centre