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Risks and Limitations of the Vitamin B12 Test While the test is highly useful, it has some limitations: False normal results : Some individuals may have normal B12 levels in blood but still experience deficiency symptoms
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The main precipitating factors are infections, gastrointestinal bleeding, diuretic overdose, insufficient fluid intake, altered electrolytes, constipation, and dietary transgression
MPO is an enzyme that carries out peroxidative activities and is released by neutrophils, also reflecting the state of neutrophils in the innate immune response (73)
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