Vitamin B12 Blood Test
Vitamin B12 is a nutrient needed for the normal function of the nervous system and the formation of red blood cells. The test measures the amount presen...
What is Vitamin B12?
Vitamin B12 is a nutrient needed for the normal function of the nervous system and the formation of red blood cells. The test measures the amount present in the blood.
Why it's testedWhy check your Vitamin B12?
Vitamin B12 is measured during nutritional assessment and when investigating tiredness or related symptoms. It is included in nutritional and anaemia-related panels.
Panels that include Vitamin B12
Vitamin B12 is a standalone test, but it's often more useful — and better value — checked alongside related markers. These panels include it:
Lifestyle Screen
The Lifestyle Screen is a broad, 18-marker general wellness check covering seven areas of health in a single blood draw.
TATT (Tired All The Time)
Our number-one panel for people who are constantly exhausted. Checks all the common culprits in one blood draw — thyroid, iron, B12, vitamin D and inflammation.
Nutritional & Digestive
This 15-marker panel combines coeliac serology (tissue transglutaminase IgA) and H.
Advanced GP3 (Female)
The most comprehensive women's health screen we offer — every major organ system, hormone, vitamin and heart risk marker in a single blood draw.
Advanced GP3 (Male)
Advanced GP3 for men screens 30 markers across eight areas of health from a single blood draw.
Three simple steps
Book online
Choose a time that suits you in under a minute — no referral needed. Same-week and weekend appointments available.
5–10 minute blood draw
Visit our Sutton Coldfield clinic for a quick, comfortable blood draw with one of our clinical team. Free on-site parking.
Clinician-reviewed results
Prompt results, reviewed by a clinician before they reach you, with a clear explanation of what they mean and any sensible next steps.
Common questions about Vitamin B12
Why is B12 measured with folate? +
B12 and folate work closely together in red blood cell formation, so they are often measured as a pair. Interpreting both gives a fuller nutritional picture.
Ready to check your Vitamin B12?
Same-week appointments. No GP referral. Prompt results, reviewed by a clinician.
Book now — £40 → All individual markers