>From: [log in to unmask] >into the cells if it can get in. Reverse T3 is the form that is not >usable, >but it gets counted with the normal T3 in the usual blood tests that only >count iodine atoms on the molecule. T3 is not supposed to include rT3 on the labs. Other people have made this comment too, but when the lab test is run it's only supposed to include the proper form of T3. I'm not sure how this is done, so I can't say how valid it is. Skipper _________________________________________________________________ On the road to retirement? Check out MSN Life Events for advice on how to get there! http://lifeevents.msn.com/category.aspx?cid=Retirement _______________________________________________________________ Thyroid Welcome Message (Instructions) Always Available Anyone can obtain a fresh, new copy of the Thyroid Welcome message at any time (24/7) by sending an e-mail message saying only "get Thyroid Welcome" (remove quotes) to our sleepless robot at <[log in to unmask]>. Its free. _______________________________________________________________