b12 injection dosage in cc Vitamin CYANOCOBALAMIN INJECTION, USP 30000 mcg/30
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Thank you all for your kind words I finally got to speak with a locum GP today, the GP that ordered the blood tests, didn't order a B12 serum after saying he would, so I'll not know if the vials were deteriorating

eLife 7 , e34836 (2018)

doi: 10.1016/j.cmet.2014.04.001

Positive results were obtained for both forms of vitamin B12
