What is the best time to screen for neonatal hypothyroidism: (A) 1 - 2 days after birth, (B) 2 - 4 days after birth, (C) 1 - 2 has after birth, (D) 2 - 4  has after birth
Answer is B. At birth, due to stress TSH level increases till 3 days(72 hours) , By 72 days ⇒ TSH becomes normal. Hence best time to screen is after 3 days i.e 2 - 4 days after birth.