Saliva-based COVID test (IMAGE) Penn State Caption Penn State researchers developed an at-home, saliva-based testing platform that can provide results in 45 minutes. In preliminary tests, the platform detects the COVID-causing virus with the same level of sensitivity as PCR tests. Credit Kelby Hochreither, Penn State Usage Restrictions Educational use only License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.