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Referring someone to a specialist with the question Serum B12 is 240 pmol/l, is it B12 deficiency? just after a first B12 injection, is one first chance spoiled.

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Learn about Vitamin B complex injection benefits, uses, dosage, and safety

Vitamin B-12 is a bioactive corrinoid compound used in experimental investigation of one-carbon metabolism, methylation pathways, and cellular redox.