Following hypothyroid diagnosis 15 months ago, I am now on 75mg levothyroxine. Muscle pain has receded but troubled regularly by insomnia and also my voice has changed so it’s hoarse and weak much of the time (which I read could be a symptom?). I asked to be retested but my gp is resisting as he says my last result 4/9/17) was ‘perfect’. I’ve now gained a print-out of the last test result which just says: Serum TSH level 1.12mu/l which the lab says ‘suggests adequate replacement with thyroxine’. I’d like to have further tests done - can you guide me as to where to get these done, and what I should ask to be tested?