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 | |