In neonatal screening programme for detection of congenital hypothyroidism, the ideal place and time to collect the blood sample for TSH estimation is ?: (A) Cord blood at time of bih, (B) Heal pad blood at the time of bih, (C) Heal pad blood on 4 day of bih, (D) Peripheral venous blood on 28 day
Answer is A. Ans. is 'a' i.e., Cord blood at time of bih