Private Blood Tests London - Marylebone Diagnostic Centre

Vitamin Deficiency Testing in London - Same-Day Appointments

Low vitamins and minerals can cause tiredness, low mood, hair thinning, poor concentration, and weakened immunity.

At Marylebone Diagnostic Centre, we offer fast, accurate vitamin deficiency testing for B12, Vitamin D, Iron, and full nutrition panels. We provide same-day appointments, private testing rooms, and 24 - 42 hour results. We are located 5 minutes from Baker Street station.

Why Test Your Vitamin Levels at MDC?

Same-day blood tests
Results within 24 - 42 hours
Full vitamin and mineral panels available
Clear, simple reports
Optional clinician review
Private suites and discreet care
Marylebone High Standard quality assurance
Trusted by patients across London

Common Symptoms of Vitamin Deficiency

  • Fatigue or low energy
  • Poor sleep
  • Hair loss or brittle hair
  • Low mood or irritability
  • Weak immunity
  • Muscle weakness
  • Brain fog
  • Pale skin
  • Tingling hands or feet

If these symptoms sound familiar, a simple blood test can help.

Our Vitamin & Mineral Tests

1. Vitamin B12 Test

Identifies B12 deficiency, which can affect energy, mood, and nerve function.

£69

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2. Vitamin D Test

Low Vitamin D is very common in the UK and can affect bones, immunity, and hormone balance.

£69

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3. Iron & Ferritin Test

Checks for low iron or iron overload. Ideal for people with fatigue, dizziness, or heavy periods.

£80

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4. Full Vitamin & Mineral Profile

Includes B12, Vitamin D, Folate, Iron, Ferritin, Magnesium, Calcium, and more. This is our most complete nutritional test.

£120 - £249

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Who Is This Testing For?

  • Anyone feeling unusually tired
  • People with low mood
  • Vegetarians or vegans
  • Individuals with limited sunlight exposure
  • People with heavy periods
  • Those on long-term medication
  • Athletes
  • Adults wanting a health check
  • Anyone concerned about their nutrition

How It Works

1

Book your appointment

Same-day slots available.

2

Attend your blood test

A quick, painless procedure in a private room.

3

Receive your results

Reports delivered within 24 - 42 hours.

4

Optional clinician consultation

Review your results and plan supplements if needed.

Vitamin Testing London FAQ

Full vitamin and mineral blood test UK – what does it include?

▼

It usually includes B12, Vitamin D, Folate, Iron, Ferritin, Magnesium, Calcium, and essential nutrients.

MDC offers one of the most complete profiles in London.

Blood test for vitamin and mineral deficiencies – do I need a GP?

▼

No.

You can book directly with us with no referral required.

Vitamin deficiency test – Boots offer home kits. Are they enough?

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Home kits can be helpful, but they are limited.

Clinic-based tests are more accurate, processed in a controlled laboratory, and often include more biomarkers.

Can I get a vitamin deficiency test free on the NHS?

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Some vitamins may be tested on the NHS, but this depends on symptoms and GP criteria.

Private testing gives you full control and fast results.

Vitamin deficiency test online free – does it exist?

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No medical-grade vitamin test is free online.

Free questionnaires cannot detect true deficiencies.

Vitamin deficiency test at home – is it reliable?

▼

Some at-home finger-prick kits are reliable, but clinic testing remains the gold standard.

We use controlled phlebotomy and accredited laboratory analysis.

Full vitamin and mineral deficiency test – how fast are results?

▼

At MDC, results are available within 24 - 42 hours.

Prices (Transparent & Simple)

  • Vitamin B12 Test: £69
  • Vitamin D Test: £69
  • Iron & Ferritin: £75
  • Full Vitamins & Minerals Panel: £120 - £249

These prices may adjust depending on bundles or additional markers.

Why Choose Marylebone Diagnostic Centre?

Fastest appointment availability in central London
Private, discreet environment
Results within 24–42 hours
Optional medical review
Clear and simple reporting
No waiting lists
Trusted by patients, athletes, and travellers

Ready to Book Your Vitamin Test?

📞 +44 7495 970109

📍 73 Baker Street, London W1U 6RD

🕗 Monday–Saturday, 8:00–16:00

🌐 marylebonediagnosticcentre.com

Walk-ins available when possible.

Book Now
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Kevin Kabeya
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Dr Salwa was amazing during my blood test. She was so supportive, thoughtful and reassuring, which really helped me feel at ease. Everything was handled efficiently and with great care. I really appreciated her kindness and would highly recommend her!
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Katie Stephenson
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Came here for the first time today after booking via WhatsApp yesterday. The whole experience was efficient and friendly, I was in and out in less than 10 mins. Dr Salwa took my blood and I barely even noticed the "sharp scratch" so was very impressed. Would come again for sure.
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Frances Benton
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Dr Salwa was absolutely lovely. An excellent practitioner. I would visit her again any time, and have recommended her to my friends and family.
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Ben West profile picture
Ben West
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Was seen to immediately by polite and lovely staff. All my needs and concerns handled brilliantly.
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Ana Đurđević profile picture
Ana Đurđević
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Great service, very friendly and helpful staff. And got my results the same day. Highly recommend!
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RW profile picture
RW
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The centre is very clean and hygienic. Highly recommend Dr. Salwa. She is very attentive, calm and re-assuring.
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Babak Anvari
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Incredibly nice and incredible quick and efficient. Professional staff. And I got my result back very quickly
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Sandra Elvira
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Very professional place. Everything was perfect.
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