Final answer:
The subject of this question is Medicine. It asks what should be done when one swab has a patient label marked as PT out of two swabs sent from a 2-year-old child for influenza and strep testing.
Step-by-step explanation:
The subject of this question is Medicine. The question is asking about a situation in which the emergency department sends two swabs from a 2-year-old child for influenza and strep testing, but only one swab has a patient label marked as PT. The question is seeking an explanation of what should be done in this situation.