Nostril swab: Test is done by inserting a swab 2.5cm into the nostril (see Full Details for a full list of kit contents). Self-testing: Easy to use within the comfort of your home and features a QR code so you can record your results. CE Certified: Registered with MHRA, CE approved, ISO certified and received validation from Public Health England Porton Down. Quick and accurate: Provides results in just 15 minutes with a 98.8% accuracy - designed to identify both symptomatic and asymptomatic cases of COVID-19. Lateral flow test: Get a Flowflex COVID-19 antigen rapid test kit.