Figure 3.

Relationship between the period of maternal KI administration and infant blood TSH levels in infants of lactating mothers with Graves disease who started or resumed KI after childbirth. Black circles indicate blood TSH levels ≥5 μIU/mL, and gray circles indicate blood TSH levels <5 μIU/mL. Among the 45 infants (87 samples), 11 infants (13 samples) had blood TSH levels ≥5 μIU/mL. All samples with blood TSH levels ≥5 μIU/mL, except 2 samples (*), were obtained immediately after the mother started KI.