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Table 3 Epidemiological criteria for assessing iodine nutrition based on median iodine urine concentration in school age children and median iodine concentration in pregnant women[1]

From: Iodide transport: implications for health and disease

Population

Median urinary iodine (μg/L)

Iodine intake

School age children (older than 6 years old)

<20

Insufficient (severe)

20-49

Insufficient (moderate)

50-99

Insufficient (mild)

100-199

Adequate

200-299

Above requirement

<300

Excessive

Pregnant and lactating women

<150

Insufficient

150-249

Adequate

250-499

Above requirements

<500

Excessive