Hi about 7 months ago I was diagnosed with a very over active thyroid gland with presence of goiter, since then my ranges have been fluctuating from hyper to more recently hypo. I have been placed on various doses of carbimazole to treat the hyper. The latest blood test reveled a normal thyroid range. which I was very pleased about. however I was also told that I had levels of Thyroid Peroxidase at 250. ? could someone please explaine this to me... is it anything to worry about ?