I'm new here and after feeling unwell for some time now have started investigating my health for myself. I had some tests done recently, some of which I had to pay for privately. My question is about my free T3 test result. It is 3.7 pmol/L ( lab range is 3.1 - 6.8). It seems low to me but I don't really know. My other results were TSH 2.24 mu/L ( lab range is 0.35-5.50). My free T4 was 13.9pmol/L (lab range 9.0-22.7).
I've been on levothyroxine for 16 years now. My dose is 75 mcg per day. After having a series of tummy viruses a year ago I lost a lot of weight and now I feel very, very tired. Does it seem like I may need a higher dose of thyroxine? I would be really grateful for anyone with any insights for me.
I also discovered recently that my ferritin is 16 ug/L (range 10-291). My GP says that is a normal result. Ditto for my thyroid results.