From: Protocol of the PSYCHOTSH study: association between neonatal thyroid stimulating hormone concentration and intellectual, psychomotor and psychosocial development at 4–5 year of age: a retrospective cohort study
Median UI (μg/l)
Iodine nutrition
<20
Severe iodine deficiency
20-49
Moderate iodine deficiency
50-99
Mild iodine deficiency
100-199
Iodine sufficiency
200-299
Iodine intake more than adequate
>300
Iodine excess