The most sensitive indicator of ‘Environmental iodine deficiency’ is:-

A. Serum T4 levels

B. Serum T3 levels

C. Urine iodine excretion

D. Neonatal hypothyroidism

Correct Answer: Neonatal hypothyroidism

Description: 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.

Category: Social & Preventive Medicine

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