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Parenteral administration of vitamin B12 effectively and promptly replenishes B12 stores
Given its importance, maintaining optimal levels is essential
Most United States laboratories report a reference range of roughly 160 to 950 pg/mL, though exact figures differ between labs, so a result should be read against the range printed on your own vitamin B12 blood test report
Higher concentrations (2.5ml water = 20mg/ml) reduce injection volume but require more precise measurement
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