New Testing Site Open in Prince George’s County Harold Fisher May 4, 2020 at 3:02 pm in CORONAVIRUS, NEWS Tweet FedEx site closed last week (Cheverly, MD) — A new COVID-19 testing site is open in Prince George’s County after the site at FedEx Field has closed. The Prince George’s County Health Department’s Cheverly Clinic is offering free COVID-19 testing for residents and will be open Monday through Friday from 10 a.m. to 3 p.m. Prince George’s County Executive Angela Alsobrooks said the clinic can test up to 200 people per day without being concerned about the weather. Tags: Cheverly, coronavirus, COVID-19 testing, Prince George's County Health Department