Objective To compare indicator of IDD in newborns with school age children.
Methods From 2006 to 2010, 119701 newborns were screened by measurement of blood TSH level by heel prick. The neonates who had blood TSH>5 mu/l were recalled for more evaluation. In addition in same period of time, urine iodine were examined in 1200 school aged children and the severity of IDD were classified by WHO, UNICEF, I CCIDD criteria.
Results Between 2006–2010 a total of 9251, 23529, 27427, 29511, 29983 newborns were screened respectively and about %1/7, %1/4, %2/1, %1/8, %1/9 of screened neonates with TSH level equal or greater than 5 mu/l were recalled for more evaluation. Finally the incidence rate of Congenital hypothyroidism was 1/625. The result of urine iodine level in level in school aged children were 270/2, 200/4, 200/1, 200, 200/2 mcg/l respectively.
Conclusion If the WHO urine iodine criteria for school aged, and children WHO neonate TSH criteria were applied, Guilan province would be classified as having none IDD.