I have suffered from thyroid problems for 5 years or more. I was prescribed Levithyroxine 3 years ago & my GP says it's under control as my TSH test is within normal range. I am symptomatic & the symptoms are getting worse. I had private blood tests done by Blue Horizon as my GP would not do the split hormone tests. My Free T3 & Free T4 are both low. T4 is at the low end of the normal range 13.4 reference range is 12-22 but my T3 was below normal range. My GP conceded that there might be a problem and sent me to a consultant but he will not do a Free T3 test, despite me specifically requesting that he did on both of my visits. I was going to try to talk him into prescibing T3 on my next visit but how can I when he won't accept the Blue Horizon result but won't do the test for himself?