Covid-19 lateral flow testing sites open across County Durham RESIDENTS will be able to check if they have coronavirus without showing any symptoms as lateral flow test centres open across County Durham. Durham County Council has launched its Lateral Flow Device (LFD) Community Testing programme, where regular rapid Covid-19 tests are now available for people without symptoms of coronavirus. Residents who wish to take part in regular testing can book a slot at one of 14 new LFD sites across the county listed below. Walk-in slots are also available. Home testing kits can also be ordered for residents who would prefer to take a test from home. These can be delivered to home or collected from the nearest Community Collect site.