I have not used Iodoral.
The TSH test is an "opposite" test so for Low TSH the number would be less than 1 (or even 0.5), which is starting to be HYPERthyroid (high thyroid). This might show up as having lots of energy, unable to sleep.
HYPOthyroid (low thyroid) shows up as a a high TSH, which is arguably above 3, some say 6. This may show up as tiredness, cold all the time, difficulty losing weight.
These numbers are so very unique to each person, with some people actually feeling quite well with very low TSH numbers and some feeling not-so-great when the TSH is over 3.
IP did not impact my numbers from two months prior to starting to a blood test at 55lbs lost; TSH was almost exactly the same. However, 8 months into maintenance, TSH is on the low end of normal (I feel warmer more than I have in the last 10 years, I think.)
This link is a reputable source to start if you want to research your decision:
http://thyroid.about.com/od/newscont...muchiodine.htm
In maintenance, it is likely that your salt intake might go up slightly (depending on your reliance on processed foods); if you use Real Salt, it does not contain added iodine like most table salt. Also, take into account if you plan to continue taking a multi-vitamin that contains iodine.
Sometimes it helps to ask your doctor "what happens if I don't take this?" or ask if you can get the bloodwork redone in 3 or 6 months before taking it. It's kind of a negotiation to get the care you want. Also ask regarding the side effects if you do take it.
This is my non-medical opinion.