Median value (mg/L) | Iodine ingestion | Iodine nutrition |
<20 | Insufficient | Severe iodine deficiency |
20 - 49 | Insufficient | Moderate iodine deficiency |
50 - 99 | Insufficient | Slight iodine deficiency |
100 - 199 | Adequate | Excellent |
200 - 299 | More than adequate | Risk of iodine-induced hyperthyroidism |
>300 | Excessive | Risk of adverse effects (iodine-induced hyperthyroidism and chronic autoimmune thyroiditis) |