Table 1.

Urinary iodine concentration and iodine intake [1,4,8].

Iodine Intake	Median Urinary iodine Concentration
	General Population	Pregnant Women	Lactating Women	Children < 2 Years Old	School-Aged Children
Insufficient	<100 µg/L	<150 µg/L	<100 µg/L	<100 µg/L	<100 µg/L
Adequate	100–199 µg/L	150–249 µg/L	≥100 µg/L	≥100 µg/L	100–199 µg/L
More than adequate	200–299 µg/L	250–499 µg/L	-	-	200–299 µg/L
Excessive	>300 µg/L	≥500 µg/L	-	>180 µg/L	>300 µg/L