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Heat exposure: Do not leave the vial at room temperature longer than necessary for handling
What Are Nitrous Oxide B12 Deficiency Symptoms
Severe liver dysfunction poses parallel concerns because urea-cycle capacity is impaired, potentially leading to hyperammonaemia and encephalopathy
Assay interference, sample handling and taking a supplement shortly before the blood draw can all distort a reading, and different laboratories use different methods and reference ranges
Stomach acid helps release B12 from food proteins
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