What Is the Vitamin B12 Q? Unpacking the Active B12 (Holotranscobalamin) Test
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6 min read
Low vitamin B12 levels are relatively common, affecting up to 20% of older adults. While many people search for 'What is the vitamin B12 Q?', this term is not a standard medical test; the query likely refers to the more advanced 'Active B12' or holotranscobalamin test, a superior diagnostic marker for deficiency.