Not to worry....I think your warning is important for every RLS sufferer to consider.
I'll get more info on the hormones and start a new thread soon so we can discuss.
On the sleep study and RLS....
I knew I had RLS, since I was a teenager (many, many moons ago). I can remember going to the movies and having antsy feet. Never knew what it was until my insomnia got bad enough to see a specialist in my 30's. It makes me mad when I hear that some believe this is a made-up disorder, allegedly so that the drug companies have something else to make money on. My daughter has RLS, too (she is an adult), so I wonder if genetics play a role. The sleep study I had confirmed I had RLS, but I didn't need the study to know I had it.
Some sleep studies will show periodic limb disorder as opposed to RLS. (I'm not sure how they can tell, though!) My neighbor's sleep study showed the former, and her doctor prescribed Requip. She had a negative reaction to the Requip, though, and so far, is going without anything else. But she is still having disturbed sleep and is very tired. It just goes to show you how easily your sleep can be impacted by things....