Vitamin B12
B12 is essential for nerve function and red blood cell production. Deficiency causes fatigue, cognitive issues, and macrocytic anaemia. Common in vegetarians, vegans, older adults, and those on metformin or PPIs long-term.
- Category
- Micronutrients
- Units
- pmol/L
- Reference range
- 200-900 pmol/L
What does a high Vitamin B12 result mean?
Usually from supplementation; rarely problematic.
What does a low Vitamin B12 result mean?
Below 200 pmol/L deficient. Below 150 risk of neurological damage. Drivers: vegan/vegetarian diet, pernicious anaemia, PPI or metformin use, gut malabsorption.
Why does Vitamin B12 matter?
Cheap to test, cheap to fix. Worth knowing.
Want Vitamin B12 interpreted in the context of your full panel? Every FORM bloodwork tier covers it, with an MD walking you through the result.
Message on WhatsAppRelated micronutrients markers
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