Fig. 2.
Serum concentrations of TSH and TSH receptor antibody (TRAb) and mean daily doses of methimazole during 24 years of continuous methimazole treatment. All 27 patients continued therapy for at least 15 years, 16 patients until 20 years and 11 patients until 24 years. Daily doses of methimazole to maintain euthyroidism decreased to mean of 3.4 ± 1.0 and 2.8 ± 1.7 mg daily, by 15 and 24 years of therapy; suppressed serum TSH was not seen in any patient after 7 years of treatment. Serum TRAb was normal in all patients during methimazole treatment