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[42] Low maternal vitamin B 12 , defined as serum concentration less than 148 pmol/L, increases the risk of miscarriage, preterm birth and newborn low birth weight
Minimize Air Exposure: Limit the time the vial is open or exposed to the environment
Here are the realworld risk gaps: No standard dose or formulation Humans in papers got 20 mg IV in a pilot, but many online vendors sell subcutaneous vials without clear dosing guidance
Touching non-sterile surfaces mid-injection introduces contamination
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