R35. For radioactive iodine treatment of TMNG, sufficient radiation should be administered in a single dose to alleviatehyperthyroidism. 1/++0
R36. For radioactive iodine treatment of TA, sufficient radiation to alleviate hyperthyroidism should be administered in a single dose. 1/++0
R37. Follow-up within the first 1–2 months after radioactive iodine therapy for TMNG or TA should include an assessment of free T4, total T3 and TSH. This should be repeated at 1– to 2-month intervals until stable results are obtained, then at least annually thereafter according to clinical indication. 1/+00
R38. If hyperthyroidism persists beyond 6 months following 131I therapy for TMNG or TA, retreatment with radioactive iodine is suggested. 2/+00