I've had issues with my thyroid for years but finally was getting it under control.  But some balance and dizziness issues since the beginning of the year sent be back to the doctor for answers.  My TSH level was 48.  Not 4.8 but 48.  We increased my medication and did a new test a month later (just last week) and now it is 51.  Trying once more time to take care of it by increasing medication.  Has anyone heard of levels being this high?