I am 45 years old female and I was diagnosed with hypothyroidism in 2012 ,I have been on medicine to treat it ,In Sept I had to have a routine blood test and they lowered my synthroid from 88 mcg to 50 mcg. Then more blood work and lowered it to 25 mcg, had more bloodwork and now they told me to quit taking my synthroid and sending me to endocrinologist, my tpo blood test was 558, tsh was .06, free4 2.10 and t3 216 I am really worried and concerned I feel like my whole body is Changing ,what could cause this and is this dangerous.

Dr. Prabhakar Laxman JatharEndocrinologist47yrs exp

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Hello, Thanks for the query. TSH 0.06 mU/L is very low, suggesting there is an excess dosage of Levothyroxine. When hypothyroidism is well controlled TSH should be maintained around 3 to 4 mU/L, at which all the symptoms are in check. Very low TSH (0.06 mU/L) is due to excess intake of Levothyroxine. That is why doctor has asked you th stop the drug. Please stop that (levothyroxine) for over 6 weeks plus, then check the TSH, if levels are as mentioned earlier, then the drug may be started at a lower dose. If you have any questions do come back. Thanks.  

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