I just received lab results that indicated my vitamin B12 level was 1230 based on a range of 211-946(pg/mL). This is interesting because I don't take B12 supplements. My question is two part: 1) Should I be concerned about levels this high; and 2) What other sources would rise B12 levels to this degree? (I currently take Synthroid, Cytomel, & Tegretol daily; Omega supps ocassionally. Could they have anything to do with B12?) Very confused.