I have a daughter who was diagnosed with Hashimotos. She is 14 and I was wondering how often should she get retested to make sure her synthroid is the right dose. She has not been tested for 8 months. She is currently on 100 mcg. She was diagnosed a couple of years ago, and her docter claims she should be retested every year, but I think that is to long to wait for a growing girl. She has started to complain about dry hands, has had some headaches, and not feeling good sometimes. Any thoughts?