Hello,
Switched to Armour thyroid approx 8 weeks ago following a year and a half on Synthroid with no improvement in energy, mental clarity, freezing cold, etc. etc.
After six weeks on 1 grain, results were:
TSH -- .06 ref range (0.40 - 4.5)
FT4 -- .8 (0.8 - 1.8)
FT3 -- 260 (230 - 425)
Labs were done 24 hours *after* previous daily dose, following some suggestions on other sites.....
But now that I think about it, if one is trying to assess what, if any, impact the the meds are having on FT3 levels, wouldn't this result be misleading due to the 24 hour lag time? The FT3 level is low normal and not much different from when i was on T4 only??? While I have noticed some improvements in physical symptoms, i'm not sure what to think.....