Re: 0.419 TSH on Synthroid 100 mcg - ??
Your doctor should not be looking at TSH (pituitary hormone) to adjust your meds.
This applies even more so to us Graves' patients since our antibodies affect TSH levels.
Please ask your doctor to test your actual thyroid hormone levels - FreeT4 (T4 or thyroxine, free, direct) and FreeT3 (tri-iodothyronine, free, serum)
Both levels should be above mid-range...at least in the upper third of the range if not towards the top end.
Dx'd Graves' June 2007..used ATD's, achieved remission Nov '09....went hypo Mar '10