Hi. I have iron deficiency anemia due to my inability to absorb it from my diet because I had the Rouxen Y gastric bypass procedure in 2002. I ve recently been struggling with malnutrition. I do get iron infusions and b12 injections occasionally. My concern is that my lab values recently made a dramatic spike and it does not correspond to my treatment or diet. I also have been dealing with chills and sweats on and off for over a year. My family doctor feels my labs are fine but to me they are a red flag. My Ferritin jumped from 70 to 178 over a nine month period and no infusions during that time. My Ferritin has never been close to normal, it s never been above 84. My b12 jumped from 500 to 1245 in a 6 month period with one injection 3 months ago. 500 is the highest I ve ever had my b12, I linger around 200-300. I also eat a veganish diet. I very rarely eat meat, cheese or eggs. My recent CBC was normal. It s also worth a mention that I lost 45 lbs without trying in the past year. My thyroid fluctuates but is always normal. My doctors cannot find a reason for my weightloss and this also concerns me.