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Maternal and Fetal Health : During pregnancy, vitamin B12 is crucial for fetal development

B12 is not always the only factor, so our providers may check for iron deficiency, thyroid issues, or other causes of your symptoms during your visit

Epub 2018 Mar 15

This requires careful aseptic technique to avoid contaminating the remaining powder

When total B12 levels are difficult to interpret, measurement of holotranscobalamin (active B12), methylmalonic acid (MMA) , or homocysteine can provide a clearer picture of functional B12 status, though availability and interpretation vary (for example, MMA rises in renal impairment)