Well I tried this out, accidently fell asleep, woke up 9 hours later, and it was gone. I tried it again a couple hours later, not thinking that I should wait like a day or more for some more accurate results. This one lasted at least 12 hours, not sure of the exact time, but definitely not 24. I waited a couple of days and tried again, and again I forgot to check, but it was half-faded by the 7 hour mark.

I've also seen other pages on the internet that say if it fades within 4 or 8 hours then you're deficient. So what might this mean? Which test has more appropriate numbers? Should I go ahead and supplement? I've already bought some iodine supplements but I don't know whether or not to take them, because as you know, some thyroid problems are a really bad mix with extra iodine and I definitely have a thyroid problem with a huge mix of hypo/hyper symptoms that I can't see a doctor about until January. So what do I do?