Table 1.

Thyroid function testing

	Presentation	Initiation of antithyroid medication	Euthyroid in 9 months	Relapse in 12 months	Euthyroid 1 month before I131	Thyrotoxicosis 4 days after I131	Hypothyroid 3 months after after I131
TSH (mU/l)	<0.01	<0.01	<0.01	<0.01	<0.03	<0.01	2.18
FT4 (pmol/l)	18.6	42.2	18.2	32.8	19.6	77.7	6.2
FT3 (pmol/l)		18				21.1