Table 3.

WHO recommended indicators for the assessment of iodine status.

Indicator	Iodine intake	Excessivea	More than adequate	Adequate	Mild	Moderate	Severe
	Iodine status	Risk of adverse health consequences	Above requirements	Sufficient	Insufficient
Total goiter rate (TGR) (%)109, 110				0–4.9	5–19.9	20–29.9	30 or more
MUICc SACd (6 years or older)b (μg/L)109, 110		≥300	200–299	100–199	50–99	20–49	≤20
MUIC Pregnant women (μg/L)111		≥500	250–499	150–249	≤150
MUIC Lactating women and children under 2 years (μg/L)111				≥100	≤100
Salt coverage (countries or areas within the country) (%)109, 110				≥90	50–90	20–50	≤20

^aThe term “excessive” means in excess of the amount required to prevent and control iodine deficiency.

^bApplies to adults, but not to pregnant and lactating women.

^cMedian urinary iodine concentration.

^dSchool age children.