Hi, I've been prescribed Levo as my TSH has finally crossed the magic 5.5 line... I was told by the endo not to start taking it until a thyroid scan is done. This was in July and my scan is not until middle of October. I really would like to start taking it as I know getting to the right dose and symptom improvements takes time. Does taking Levo affect the thyroid gland in a visible way? Anyone knows if this is necessary and what is likely to happen to the gland if thyroxine is supplemented?