New COVID-19 Testing Method Gives Result In 1 Second, Say Scientists: Report New COVID-19 Testing Method Gives Result In 1 Second, Say Scientists: Report New COVID-19 Testing Method: Scientists say this new method which gives Covid test results in just 1 second can greatly reduce the cost of testing. The technology can not only detect COVID-19 but can also be applied to other diseases too, they said. Scientists have developed a sensor system that can detect coronavirus from saliva in 1 second New Delhi: Scientists have developed a novel sensor system that can detect the novel coronavirus from saliva samples in one second, which is way faster than current COVID-19 diagnostic methods.