my dog is on Soloxine 0.1 bid since Feruary 2012. Last month (June2012) I was brushing is ears, when I realized I had a big amount of fur on the brush, this has never happened. So I called the vets for an appointment, and also if they couldrepeat his thyroid testing. The day I was to bring him in, I had to give him his dose of Soloxine 4to 6 hours prior to the time of his appointment. The Vets examined my dog, drew blood for the test, and said she would call me the next day with the results. So the next day came, I called and was told that it was within the normal range. I was so happy I didn't have to go up on the dose. Well, since than I feel something at right with my dog, he urinates more frequently than ever, he seems like his loosing weight. I don't know what to do???? If you can shed any light on this PLEASE let me know. My two dogs are my children!!!!