Vitamin Deficiency Blood Test

3 Biomarkers | Venous Blood Test | CE-marked | UKAS-accredited | Doctor-reviewed results with personalised interpretation.

An advanced vitamin profile checking active B12, folate and vitamin D. Designed for people investigating tiredness, low mood or nutrient status, this test gives clear, clinically reviewed insight so you can understand your results and know what to do next.

Results are typically available within 2 working days from when your sample reaches the laboratory (excluding weekends and bank holidays).

£85.00

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Choose your sample collection method: Book a venous draw at our Livingston clinic Book a venous draw at home with a nurse +£63 Self-arrange a professional sample collection Partner clinic visit + £35.00

Active Vitamin B12
Folate
Vitamin D

Fasting required 8–12 h before the test (water only) recommended for glucose, cholesterol/triglyceride accuracy
Sample timing: between 7:00 AM – 10:00 AM
Stay hydrated; avoid strenuous exercise, heavy meals, and supplements (iron, B12, multivitamins, biotin) for 48 hours prior
Continue prescribed medications unless otherwise directed

Frequently asked questions

It is for adults with symptoms that may reflect poor nutritional status, including fatigue, low mood, brittle nails, poor concentration or frequent illness. It screens the key vitamins and minerals, including vitamin D, B12, folate, ferritin and related markers.

Fasting is not required. Please avoid taking supplements on the morning of the test so results reflect your baseline rather than that day's dose.

Ideally pause supplements for one to two weeks so the results show your underlying status rather than recent intake. This matters most for B12 and iron. Importantly, stop biotin containing products for at least 48 hours, as biotin interferes with several laboratory assays.

Yes. Absorption matters as much as intake. Coeliac disease, inflammatory bowel conditions, previous gastric surgery, and medications such as metformin and long term proton pump inhibitors all reduce absorption despite a good diet.

Your doctor-reviewed report explains the finding, its likely significance, and the recommended next step. That may be dietary change, a specific supplement regimen, retesting after a period of correction, or investigation into why absorption is impaired.