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Your body naturally produces it in the liver and kidneys
Some insurance companies require certain medicines to be tried before another medicine is approved, sometimes called step therapy. Some insurance companies will exclude an entire class of drugs, such as weight loss medicines, and not cover these medicines
Because many of the symptoms associated with B12 deficiency are also common symptoms of other conditions, confirming or ruling out those potential causes is also important
Research Resources Browse the Research Library and Research Guides for educational content covering compound testing, storage, laboratory handling, and quality control
Atypical coeliac sprue is usually seen in older children or adolescents, who often have no overt features of malabsorption
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