According to many sites this is all important and need to get this done to improve/stop the Hashimoto's disease getting worse. Has anyone had this checked and been able to get treated? My last results of any significance: Total T3 - 0.92; (I thought the FREE T3 was the important one to test for), Free T4 - 1.27; TSH - 2.088; Ferritin - 18.77. I'm hoping to cure it all with God's help. I'm on 50 ug Levothyroxin which has improved my TSH levels but still have all the symptoms as before. So something's not right.