What is a good Vitamin B12 level?

BioForge works to an optimal range rather than the lab's reference flag. For Vitamin B12 that is 500–900, measured in pg/mL. A result inside the lab's normal range can still sit outside the range where most people feel and function well.

Learn · Vitamins, Minerals & Exposure

Vitamin B12

Measured in pg/mL

Needed for nerve function, energy and red blood cell formation. Low-normal values still cause symptoms.

What the numbers mean

These are the ranges BioForge works to. They are not the same as a lab's reference range, which is built from the general population rather than from people who feel well.

Low

<400 · Functionally low even if · 'normal'

Optimal

500–900

High

>1,245 · Usually supplementation

What moves Vitamin B12

Lowered by metformin, acid-reducing drugs, plant-based diets, alcohol, and absorption problems. If your B12 is borderline, ask for methylmalonic acid for a true answer.

Related markers in Vitamins, Minerals & Exposure

Vitamin D, 25-OH Folate Magnesium, RBC Zinc, RBC Copper, RBC Selenium, RBC Urine Toxic Metals (21)

This page is educational and is not medical advice. Ranges are general and do not account for your history, medications or symptoms — a single number never decides a protocol. Your results are interpreted by a licensed clinician alongside everything else about you. Back to the Learning Center

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