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especially for those with digestive issues or low absorption
But even this doesnt always give a clearcut answer on whether there is a B12 deficiency Two secondary tests measure B12 function The secondary tests that measure how well B12 functions in the cells, are called functional tests
Because it involves peptide handling and, in many cases, injectable use, it should not be approached casually
i now take 1X daily and an extra if i am going to have a drink which i only do every couple of weeks
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