so I saw an NHS endo yesterday. I came away very disappointed and felt I had been wasting his time. My tsh was in range at 0.79 but my FT4 was 11.8 (12-22). I reeled off my many symptoms which he agreed would fit with hypo pituitary or hypothyroidism but he said it was unlikely to be either of these things due to my tsh and FT4 only being 'slightly under range'. His solution was to repeat thyroid function tests, test vit D again and do a cortisol test which I will be sent an appt for. He seemed pretty sure there wouldn't be a problem as he informed me he would send me an appt to review my results before discharging me. All in all I felt quite silly. Does anyone have any idea why my FT4 might be low with a normal tsh if the endo doesn't find any problem ? Would I need to try and increase my FT4 level or leave alone ?
Thanks in advance x