<prompt> In neonatal screening programme for detection of congenital hypothyroidism, the ideal place and time to collect the blood sample for TSH estimation is ?Cord blood at time of bihHeal pad blood at the time of bihHeal pad blood on 4 day of bihPeripheral venous blood on 28 day  <response>: Ans. is a i.e., Cord blood at time of bih 