My TSH was 1.6 on 1 November. I went on holiday and took it for the first few days but then, being out of my usual routine, I just kept forgetting to take it. I had my first Endo appt when I got back and TSH was 99. GP rang in a panic and they upped me from 100 to 150mcg. I'm not convinced it was caused by me not taking it for that short period of time. I've heard it takes 8-12 weeks of not taking it for T4 to be completely out of your system. Has anyone else got any ideas what may have caused this as I stupidly told the doc that I hadn't taken it and they are convinced that's what caused it. TIA
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