Also Known As: Vitamin B12
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Required for red blood cell function and important in nerve function.
To identify a deficiency, help diagnose the cause of certain anemias, such as pernicious anemia, an autoimmune disease
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REFERENCE INTERVALS FOR ADULTS: 200-835 pg/ml
INCREASE IN: Some leukemias
DECREASE IN: Malnutrition, malabsorption, pernicious anemia