OMG, I've been taking Levo for about 43 years, and keeping results for over 20 years and since then I've only once had my TSH in range 😮 Does this mean I've been treated for something I haven't got for all these years???
But I'm really pleased to hear you're now cured and healthy
And seriously ..... your doctor is woefully inadequate in her understanding of Hypothyroidism.
Do you have the article Dr Toft wrote for Pulse Online Magazine?
thyroiduk.org.uk/tuk/about_... > Treatment Options
"The appropriate dose of levothyroxine is that which restores euthyroidism and serum TSH to the lower part of the reference range - 0.2-0.5mU/l.
In this case, free thyroxine is likely to be in the upper part of its reference range or even slightly elevated – 18-22pmol/l. Most patients will feel well in that circumstance.
But some need a higher dose of levothyroxine to suppress serum TSH and then the serum-free T4 concentration will be elevated at around 24-28pmol/l.
This 'exogenous subclinical hyperthyroidism' is not dangerous as long as serum T3 is unequivocally normal – that is, serum total around T3 1.7nmol/l (reference range 1.0-2.2nmol/l)."
If not, email firstname.lastname@example.org for a copy, print it and highlight question 6 to show your GP.
Or better still, find a new GP.
I think this is possibly the most surprising post I've ever read!