Background on me: I switched to sea salt without iodine 6 years ago. I cook 95% of my meals, so get almost no exposure to salt in restaurants.
My TSH in April was 4.47. Ref range .45-4.5.
Took a backpacking trip this summer, in which we used iodine to kill parasites in our drinking water.
Here's thyroid panel from a couple of days ago:
TSH 3.950 [.45-4.5 uIU/mL]
Thyroxine (T4) 9.2 [4.5-12.0 ug/dL]
T3 Uptake 31 [24-39 %]
Free Thyroxine Index 2.9 [1.2-4.9]
So TSH has dropped, and the other numbers are about where they were in April if I recall correctly..
Everything else is good as far as hormones. I do nightly shots of 14mg test Cypionate, and total is 1170 [348-1197] and sensitive estradiol is 29.
I'm looking at iodine replenishment but seeking feedback as well.