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"Is there a "gold standard" for human serum vitamin B12 assay?"
Those with Poor Diets: Individuals who dont consume a balanced diet may be at risk of vitamin B12 deficiency
Nervous System Issues : Vitamin B12 injections can sometimes cause nervous system problems, such as numbness or tingling in the hands and feet, muscle weakness, or difficulty walking
The online visit screens for this
Leaving compensatory mechanisms unchecked
Neurological symptoms may take several weeks to months to improve, with some deficits potentially persisting if treatment is delayed
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