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(PubMed) Smith AD
Do not use these codes for dates of service on or after January 1, 2013
Metformin for blood sugar and the acid reducers (PPIs) that so many adults take both measurably lower B12 absorption over time
(2021) Efficiency of the sublingual route in treating B12 deficiency in infants
With 2 mL, the same 0.1 mL is only a 5% loss
