Just curious as to what you are told is a normal TSH level for post radiation cancer survivors. I just had one done one year from the start of radiation treatment and it came out 4.36 My RO was emphatic that this was "spot on" (he's younger than me) for the patients he sees at the CCC. Since I had no symptoms, I was (and am) very happy.
However, I can't shake my need to double check all medical advice I get. I discovered that there is a TSH reference level "war" going on unbeknownst to me for the last six years. While almost every testing laboratory still uses an acceptable range for third generation TSH testing of 0.34 to 5.6, the top dogs are still fighting over a recommendation to lower it to 3.0. .
If you want the true believer stories on lowering it, then just surf the net, especially About.com doctor "experts". If you are more of a clinical journal type guy like myself, check out the editorial on the risks of doing so at the August 2008 issue of Clinical Thyroidology at the American Thyroid Association web page
Vol XX Issue 2 of CT by ATA
Unfortunately, none of these discussions even mentioned what the new normal would be for us. I'm personally glad my RO is more of a traditionalist in this regard but am curious as to the wisdom and experience of this board.