In 1991, at age 22, I was diagnosed with a very slight hyperthyroidism. Because I have type 1 diabetes too, it was taken very seriously. I was put on Strumazol immediately and a bit of Thyrax (levo). After about 1,5 years it changed into hypothyroidism and since then I'm on levo and since a few years Cytomel (T3) is added because of symptoms (which have slightly improved). In the search for a new doctor I got some information from my old patient file and noticed that it mentions that I had a radioactive treatment in 1993. This is not the case. I am sure I would not have agreed to that at that stage and I also would remember of course. When seeing a new doctor (I made an appointment today and can see him end of November) I will tell him of course. Recently upon my request my anti-TPO was tested and resulted in <33 (normal range 0-60). Because diabetes type 1 is auto-immune and often goes together with hypothyroidism I always thought both were auto-immune, but I have started wondering lately. I think it is helpful to find out to optimize my further treatment.
My question is: does any of you know if, after 27 years, such anti-TPO test can stil tell if I have Hashimoto's or not? Or does the body get used to a situation and no longer make anti-body's? Or does it mean that if there are no anti-body's now, there were no in the past? That from the beginning my underactive thyroid was not auto-immune?
I look forward to what information you may have!