The different ranges of normal between labs shouldn’t make an enormous difference in what you find out, but make sure you don’t compare the value in one test to a value in the other test ~ just look at the relationships to the normal range, to evaluate your progress.
The one thing about Graves’ that is consistent is that we are never the same as another Graves’ patient, so there’s no calculation we can make to say when exactly you would be going hypo, based on your progress to date. It’d be nice if we could, it’d save time for lots of us….
The best thing to do is keep a symptom diary. When you notice 4 or 5 classic hypo symptoms that are occurring frequently, go and get your blood tested. You may see at first that you are feeling as if you may be hypo, when in fact your levels read normal. That happened to me after my RAI, and all I could surmise was that it felt sluggish for me, because I was used to hyper by then (it was the only time that everything in my house was getting done!). So keep track of what’s going on with you, get blood tests when you feel it’s necessary, and go from there.
As I used to tell my kids when we were on long road trips ~ "closer every minute!" ” title=”Very Happy” />