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E.El-NekeetyA
Li and Wang, 2011)

Eddie Hughes, FNP-BC Family Nurse Practitioner with 15+ years of experience across emergency medicine, neurosurgery, hospital medicine, and regenerative care

In 2025, 13 lab warning letters cited failures in this area, including labs that lacked formal complaint-handling procedures or failed to investigate complaints that should have triggered a quality event

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Freezing can cause the vitamin B12 molecules to break down, altering its effectiveness and making it unsafe for use
