SEARCH Articles Figures Tables Median urinary iodine excretion Pregnancy urinary iodine excretion United States urinary iodine concentrations Urinary iodine and goiter prevalence Urinary iodine concentrations Urinary iodine concentrations Examination Surveys Urinary iodine concentrations States Urinary iodine concentrations thyroid hormones Urinary iodine creatinine ratio Urinary iodine excretion Urinary iodine excretion measurement Urinary iodine excretion results Urinary iodine excretion variation Vegans urinary iodine excretion