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A member asked:

T4 and t3 normalized with methimazole. how often should one check for tsi? how often does tsi fluctuate?

A doctor has provided 1 answer

TSI not needed: TSI can be useful in the diagnosis of hyperthyroidism, particularly in determining the reason for the problem, but monitoring needs only TSH and sometimes T3 and T4.

Answered 3/27/2017

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T3 and T4 normalized with 1 month of Methimazole. TSH is low. Loss of menstruation persisted for nearly 7 months; will menstruation ever return?

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After 30 doses of 20mg/day of methimazole, TSH is still .01. T3 (liothyronine) is now 3.4 (was 5.2) and T4 is 1.3 (was 1.2). Shouldn't they be better after a month?

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What is the expected projection of both TSH and free t4/t3 levels while taking methimazole for Graves' disease?

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7 weeks ago my TSH was 0.019 and t3/t4 were normal. This time around my TSH was 14 and my T4 is now low but my TSI is wnl. Could this be Hashimoto's?

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