A 20 y/o female college student comes to student health with…
A 20 y/o female college student comes to student health with complaints of fatigue, fever, sore throat and nausea. She states that a couple of her friends have had the same thing and were told it was a virus and they needed to stay on bed rest. Temp today is 102, her throat is erythematous with tender posterior cervical lymphadenopathy. Her liver is also slightly tender and extend 2cms below the costal margin. Which of the following tests would help you the most with your diagnosis?