I was wondering if anyone had your thyroid function tested when it was still optimal, that is, before you even had thyroid disease? What I'm curious to know is what labs (TSH, fT4, fT3) more or less look like in an individual with a healthy thyroid gland and no symptoms of even subclinical hypoT.
I imagine that, as the human thyroid gland secretes mainly T4, and only a little T3, fT3 levels in a healthy individual will be lower than fT4 levels?
I realise it varies from person to person, but I'd be curious to find out if anyone remembers what your labs looked like when you were healthy and feeling fine. When I had my thyroid function tested for the first time I already had overt hypothyroidism (Hashimoto's).