Table 1: Epidemiological criteria from the WHO for assessment of iodine status in a population using urine iodine measurement [3].
Urine Iodine µg/L | Iodine Intake | Iodine Status |
< 20 | Insufficient | Severe deficiency |
20-49 | Insufficient | Moderate deficiency |
50-99 | Insufficient | Mild deficiency |
100-199 | Adequate | Adequate iodine nutrition |
200-299 | Above requirements | Slight risk of more than adequate intake in the overall population |
> 300 | Excessive | Risk of adverse health consequences (iodine-induced hyperthyroidism, autoimmune thyroid diseases) |
Pregnant Women | ||
Urine Iodine µg/L | Iodine Intake | Iodine Status |
< 150 | Insufficient | |
Insufficient | Adequate | |
250-449 | Above requirements | |
> 500 | Excessive |