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In addition to getting B-12 from food sources, it is possible to acquire B-12 through a man-made version of the nutrient, known as cyanocobalamin
The serum B12 level serves as the initial screening test, with values below 148 pmol/L generally indicating deficiency, and levels between 148221 pmol/L considered borderline
The symptoms often begin gradually and can include persistent tingling, burning sensations, numbness, electric shock feelings, or a loss of balance and coordination
Methylcobalamin may be better for treating the neurological symptoms of B12 deficiency
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