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25 Patients diagnosed with vitamin B 12 deficiency whose history and physical examination do not suggest an obvious dietary or malabsorptive etiology should be tested for pernicious anemia with anti-intrinsic factor antibodies (positive predictive value = 95%), particularly if other autoimmune disorders are present
PMID 16267554
Its essential for red blood cell production, DNA synthesis, energy metabolism, and neurological function
Envo internacional
Typically a weekly intramuscular injection
Note that vitamin B12 is water soluble
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