CrashDiet

70% accuracy for a COVID PCR test (nasal pharyngeal) is accurate for the current tests we are using in BC. If you are symptomatic and have a positive test, you need two negative tests to show that you do not have COVID-19. This accuracy has been know for months and is part of the reason why the "just test everyone" narrative in April/May was considered a poor approach to virus isolation. From the BC CDC: http://www.bccdc.ca/Health-Professionals-Site/Documents/COVID19_InterpretingTesting_Results_NAT_PCR.pdf