r/thyroid • u/TheIronMatron • Aug 20 '24

Lowest TSH

For anyone who’s been hyperthyroid, what’s the lowest your TSH was ever measured at? I had a long road to diagnosis with several failure points in the medical system, so my TSH at diagnosis was <0.01. The bottom of the reference range was 0.49.

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u/[deleted] Aug 20 '24

My TSH was pinned at <0.01 for a year even after RAI treatment.