My TSH appears to be rising even though my dose of levothyroxine has been raised. I've been on levothyroxine for just over 12 months now and actually feel pretty good with no brain fog these days. My TSH has never been sky high and, consequently, I had to fight for treatment. I'm still not officially diagnosed as hypothyroid! I started with a TSH of about 7 to 7.5 and this was considered not to need treatment because I had no thyroid antibodies.
My TSH 6 weeks ago was 5.8 ref 0.2 to 6 with my FT4 13.5 ref 10 to 20 so my doctor raised my dose of levithyroxine from 75mcg to 100mcg. I decided to check what the level was now before my official blood test which was today. I used a Myrios test earlier this week and the results came back as TSH 8.70 ref 0.24 to 4.20 and FT4 16.5 ref 12 to 22. I would like to be forearmed before my doctor rings me for a telephone appointment on Monday and would very much appreciate advice as to why my TSH should have gone up.