What might cause elevated b12 (1439), low folate (10.2), and low ferritin (36)? My d3 used to be 19, but I've gotten it up to 50 thru supplementation (20,000 Iu under dr supervision). Is there anything I can do to get my b12 in range? Ps. I have abdominal issues, and went gluten free 1.5 yrs ago because of gluten sensitivity. I don't know if there is an absorption issue.