I was diagnosed with Hypothyroidism or Borderline Hypothyroidism about a year ago as my TSH was above 5 and below 10 with my T4 being just below mid-range. I was put onto Levothyroxine 100mg. I then had a repeat thyroid test about 6 weeks later which included my TSH, T4 and T3 levels where my TSH had decreased into the normal range of 1.71mu/L (range 0.30-5.00mu/L. My T4 levels had increased slightly being at 16.9pmol/L (range 9.00-19.00pmol/L). My T3 levels had dropped slightly from 5.21 (I think as I cannot find my print out) to 4.30pmol/L (range 3.25-6.21pmol/L). I tried to challenge my doctor on my T3 level dropping but I was told this was normal and told to come back for a repeat test this April which was about 7 months after.
I had a full blood test for everything this April 29th and my thyroid levels have come back abnormal. I am now hyperthyroid as my TSH level is now 0.08mu/L (range 0.30-5.00mu/L) and my T4 level is now 20.1pmol/L (range 9.00-19.00pmol/L). My Levothyroxine has now been reduced from 100mg to 75mg daily and I have been told to come back in 3 months time. I asked them why my T3 levels were not tested this time but they told me it is not neccessary.
I am not quite sure what to make of all this. They don't seem to have a clue what they are doing.