The most sensitive indicator of 'Environmental iodine deficiency' is:-
Serum T4 levels
Serum T3 levels
Urine iodine excretion
Neonatal hypothyroidism
Neonatal hypothyroidism is the most sensitive indicator of environmental iodine deficiency. Other useful indicators for assessment of Iodine deficiency: Prevalence of goiter Prevalence of cretinism Urinary iodine excretion (Major impact indicator) Measurement of thyroid function by determination of serum T4, TSH.
Vitamins and Nutritional Deficiencies