i have just been diagnosed by blood tests tyhroid problem, serum tsh level lo <0.01. serum free t4 level 28.4. serum free triiodothyronine level hi 15,2 comment biochemically hyperthyroid. consistant with autoimmune thyroid disease. what are these figures meaning and how bad or good are they on beta blockers till see hospital, but have to take low dose as always had low blood pressure