<prompt> Screening of neonatal thyroid disease is done by -T4T3TSHTPO antibodies  <response>: Ans. is c i.e., TSH o Since the neonates are asymptomatic at birth all newborns are screened for neonatal hypothyroidism. TSH is estimated either in cord blood at the time of birth preferred or blood obtained from heel prick after 2 days of birth. 