I have had test for thyroid & they all come back ok. These test have all been done with a medical doctor. When I first did the Iodine patch & went through detox, my thyroid swelled up to 3 times it size. I went to my MD & she did alot of test on the thyroid. She could not get over how swollen I was. I told her about the iodine patch I did & she said that there was no way that could have done this. When all the test came back ok & she said I must have ate something that I was allergic to. I know that I do have a thyroid problem. I do have a groiter. I have started taking prolamine iodine.
Lab tests are notoriously inaccurate when it comes to thyroid testing. Basal body temperature is much more accurate:
Also keep in mind that there are a number of things that suppress thyroid function including adrenal dysfunction, estrogen dominance, chlorine, fluorine and bromine exposure, etc. Some but not all of these will respond to iodine therapy. In your case it sounds like adrenal dysfunction reducing cortisol levels that is needed for proper T4 to T3 conversion.