My 17 year old grandson has fever, sore throat, cough, fatigue for 5 days. He was seen in clinic Thurs. Strep flu testest negative. Mono test pending. WBC 3.8, lym 15.6,platelets 141.was seen in clinic today same results except abc 2.2, gym 2.2, platelets 64. He was given Z pack on first visit. they changed to Doxycycline today. Concerned about lab work.