The Lot J site is open seven days a week from 9 a.m. to 5 p.m. each day, or while supplies last. Prime OsbornThe city-run site near the Prime Osborn Convention Center is open to Jacksonville residents only. To complete the screening, just visit TelescopeHealth.com or download the Telescope Health app using either the App Store or Google Play. Those who get tested at Lot J can check LabCorp’s website for results, according to Fire Chief Keith Powers. Full detailsSt. Johns County residents can be tested at Flagler Health, Avecina Medical-Julington Creek and at the St. Johns County Health Department.