5, but my free T4 was only 9, and I had really bad depression
, fibromyalgia, weight gain, and vaginal bleeding (despite being menopausal - I am 53), plus loads of other minor stuff.
I also tested positive for antibodies.
After 2 years, I am now on 100mcg thyroxine, and the bleeding has gone (it stopped immediately I went on to thyroxine), the fibromyalgia and depression have dramatically improved, and I am able to work full time again.
However, on my last blood test my TSH was only 0.