So far my results do not swing at all but I only get them done every 3 months at first and now more like 5 or 6 months, so maybe I have to test more often. But I don't really understand hash totally yet, it seems nothing is really done except thyroid meds and maybe supplements, so it does not appear there is much more I can do since finding this out, but maybe it is why I still have PN symptoms in my feet when at first they kinda went away when I first started on thyroid meds and when I increase dose. (but then comes back)