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vitaminsHas Critical Values
Vitamin B12 (Cobalamin)
B12· also: Cobalamin, Vit B12
Clinical Overview
Vitamin B12 is essential for nerve function, DNA synthesis, and red blood cell formation. Deficiency causes macrocytic anemia, peripheral neuropathy, and cognitive impairment. Common in vegans and elderly.
Reference RangesWHO/IFCC standards
| Reference Range | Unit | Notes |
|---|---|---|
| 200 – 900 | pg/mL | — |
Also reported in: pmol/L.
Critical (Panic) Values
Critical Low: < 100 pg/mL. Values outside these limits require immediate clinical attention.
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Related Topics
vitamin B12anemianeuropathyvegan