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Others, particularly those with severe deficiencies or conditions that significantly impair absorption, may benefit more from injections prescribed by their healthcare provider
22,23 In patients with a normal or low-normal serum vitamin B 12 level, complete blood count results demonstrating macrocytosis, or suspected clinical manifestations, a serum methylmalonic acid level is an appropriate next step 1,2,6,18 and is a more direct measure of vitamin B 12 's physiologic activity
What are the regulatory implications of using these peptides in clinical practice
Kang D, Shi B, Erfe MC, Craft N, Li H
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