Iron / Vitamins
Vitamin B12
What it means
Needed for healthy nerves and red blood cells. Vegetarians often run low. Symptoms include tingling, fatigue, and memory issues.
Typical normal range
211–911 pg/mL
Reference ranges vary by lab, age, sex, and pregnancy. Always check the range on your own report.
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Related terms in Iron / Vitamins
This is a plain-language explanation for patients, not clinical advice. AI can be wrong. Always confirm with your doctor.