This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'In neonatal screening programme for detection of congenital hypothyroidism, the ideal place and time to collect the blood sample for TSH estimation is ? \nSelect and explain. \nA. 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', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Cord blood at time of bih", 'role': 'assistant'}]