The Physician may Verify the levels of methylmalonic acid (MMA) and other substances To guage for vitamin B12 deficiency. These lab values assistance detect a vitamin B12 deficiency through the early levels. We url primary sources — together with scientific studies, scientific references, and statistics — in each report and https://helpstomaintainyeastinthe75319.wikinstructions.com/816174/vitamin_b12_supplements_options