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12 , 13 Individuals with vitamin B12 deficiency may be at greater risk of patient safety incidents in primary care as they often describe suboptimal communication, lack of dignity and respect, and feelings that healthcare professionals lack the knowledge, skills, and attitudes to adequately treat their condition

B12 injections are also available through online providers like AgelessRx, which connects users with licensed medical prescribers. After a virtual visit, these services may send prefilled syringes or vials with instructions, often using the active form methylcobalamin, which is considered highly bioavailable. Some mobile health services send registered nurses to homes or offices to administer B12 injections, combining medical oversight with convenience for busy individuals

LC MS/MS due to its superior performance features is an expensive proposition but with a choice of several ionization techniques it permits handling of low volatility thermally labile compounds with varying polarities in several application areas such as pharmaceuticals, foods and flavours, cosmetics, sports medicine, explosives, etc

Dong J, Huth WJ, Marcel N, Zhang Z, Lin LL, Lu LF