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instead, gently swirl to mix
A surprising number of medications can deplete the body of vitamin B12
B12 injections are generally well-tolerated with mild injection site reactions, though rare hypersensitivity and hypokalaemia can occur, particularly when initiating treatment for severe deficiency
There is a standardised test from urine available through a method called solid-phase extraction method, with more than 50 pg/mL (picograms per millilitre) being a positive sample [1]
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