Medicine General 16286c16 Iodine requirement in pregnancy and lactation is A 90 mcg B 120 mcg C 150 mcg D 250 mcg High-Yield Explanation Pre school Children - 90 mcg. School Children ( 6-12 years ) - 120 mcg. Adults ( > 12 years ) - 150 mcg. Pregnancy and lactation - 250 mcg.