I have been taking Synthroid for about 9 years now and have my TSH tested at least once a year. I just had it done this month and the result was 4.704, which is slightly above normal limits according to the nurse. She told me my physician was going to keep my dosage the same, which is 100mcg, even though my physician noted at my exam that my thyroid gland was enlarged and I am having classic hypothyroidism symptoms. Tired, hair is really thinning and very dry and brittle, dry skin, cold all the time, forgetfulness, and weight gain even though I exercise and watch my diet every day. I read online that when a patient is on Synthroid the TSH goal is to be between 0.3-3.0. Is this the target that most physicians try to keep their patients at? I am confused as I am having problems but she does not want to increase my Synthroid. Any advice would be appreciated.