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However, the current available antibody assay has low sensitivity and studies have found that antibodies are only detectable in 4060% of pernicious anaemia cases, so a negative test cannot categorically exclude pernicious anaemia[18,19]
Later, they are given monthly
Intramuscular Whether given intramuscularly (IM) or subcutaneously (SQ), the goal of B12 injections is to bypass the digestive system when stomach absorption of B12 is impaired
Monthly B12 Injection Protocols Many patients get monthly B12 injections
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