that is exactly what i have been doing. i took my temperature for so many years that i know my temp by how i feel. ten years ago i tried to get T3 treatments designed to treat cold body syndrome. now i know how to do it myself and i am gaining my metabolism back. you have nailed it, sir. no doubt the tests are as bogus as the day is long. been saying that for ten years.
and to the cretins who continue to believe and state that Iodine is harmful to the thyroid(or any organ or gland), it was lack of Iodine that damaged them. Iodine is your only hope for getting better as it is the exact prescription for iodine deficiency. also, to these same folks, take some iodine so you can think straight.