Can be sign of: High B12 levels in the absence of supplementation can be a sign of serious health problems including liver ; kidney disease, myelproliferative disorders including myelocytic leukemia, polycythemia vera ; hypereosinophilic syndrome. Testing must be done to find the underlying cause. See http://healthyeating.Sfgate.Com/high-vitamin-b12-mean-9057.Html.
Answered 11/27/2017
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