I got to know I have hypothyroid 16.64 in 2016. I started taking thyronorm and now I am using 62.5 mg. I did tsh test in sept 2018 and result is 1.3 which is normal. Then I did tsh test last week and it is .4 which is normal too. But my query is whether I can continue taking 62.5 mg tablet or I need to contact doctor immediately to see that the tsh level should not come down. Any risk if it comes down from normal range.

Dr. Prabhakar Laxman JatharEndocrinologist48yrs exp

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lybrate-user ji, thanks for the query. Madam when one is on adequate dose of levothyroxine, tsh is maintained with in the normal range. Even though the range is 0.5 to 4.5 or up to 5 mu/l, maintaining tsh around 3 to 4 is good enough. Only tsh goes below 0.1 mu/l then it is considered as going to wards hyperthyroidism. So please keep checking tsh once every 3 to 4 months and see that it is with in normal limits. If any major change occurs then better to consult the doctor. Or it is also good to consult routinely once a quarter. Thanks.  

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