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If you plateau at a sub-maximal dose, escalation is the logical next step
B12 deficiency can mask or coexist with folate deficiency both should be assessed
If your body has trouble absorbing B12 through the digestive tract, injections are especially helpful because they deliver the vitamin directly into your bloodstreambypassing the gut entirely
Relative sensitivities of serum cobalamin, methylmalonic acid, and total homocysteine concentrations
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