Hello all, Two blood results that interest me that have came up are: High Serum Vitamin B12 - on 3 seperate occasions and I have not ever taken B12 as a supplement or indeed any Multi Vitamin Supplement for years. High Serum IgA - Due to the IgA and B12 I was sent to a Blood specialist to rule out the likes of Multiple Myeloma, Leukemia, Lymphoma. Nothing was found on a physical exam, nodes fine, spleen fine, etc. I was blood tested for various things like Para-protein, Jak2 Mutation, Calcium, LDH, CBC, bone, and others - all were negative and fine. I was then discharged. I have also been tested for Celiac Disease via the blood tests but they were also negative, although I do happen to get cramping of my lower intestine randomly. The results still interest me because I have a host of symptoms over the past 1.5 years that are so far unexplained and these results are the only things that have so far been found. symptoms like: Neuropathy - Tingling/burning of my hands and feet Headaches Dizziness Fatigue Increased Sweating Any ideas on what would be worth exploring? I'm still wondering if this high b12 could actually mean a functional deficiency?