Guest guest Posted April 2, 2010 Report Share Posted April 2, 2010 I was curious if RT3 has been contributing to my brain fog. I've been on desicated thyroid for about 5 years, and my temps have been mid-98's for a few years now. The only thing that has really been lingering was the brain fog. When I had the labs done, I had been on 3 grains Nature-throid + 25mcg of cytomel per day for 6 weeks: Free T3 - 7.1 (2.3-4.2) Free T4 - 1.32 (.67-1.76) RT3 - 307 (the range went up to 350) Going by the ratios given here, FT3:RT3 ratio should be at least 20. (7.1 x 1000) /307 ~ 23 Is this ok? Of note, I had not taken any thyroid meds within 12 hours and oddly enough, on 4 grains of Nature-throid w/o cytomel, my FT3 runs around 6.0 Quote Link to comment Share on other sites More sharing options...
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