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This is the most common route for B12 in a clinic, usually into the deltoid muscle of the upper arm
3 The UK National Institute for Health and Care Excellence (NICE) states that a cut-off of 200 ng/l identifies 97% of people with B12 deficiency, and a level below 100 ng/l is usually accompanied by metabolic or clinical evidence of B12 deficiency
But the route of administration significantly impacts how effectively these mechanisms can be activated
Thats why Dr
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