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Alternative product options Non-injectable B12 products that do not require gastric acidity and/or Intrinsic Factor to enhance B12 absorption include Elevated B12 levels B12 levels are rarely monitored once they are within acceptable range, and elevated levels if identified, are not addressed
Retrieved 14 March 2016
The uMMA test may be more useful than the serum MMA test, because people with B12 deficiency and neurological damage excrete significantly more uMMA than those without damage
This depletion can lead to anemia, and also an increased risk that their breastfed infants become vitamin deficient
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