Saliva Diagnostics (IMAGE) Forsyth Institute Caption Any saliva-based test will need to be able to tease out the right molecules to effectively test for COVID-19. Since saliva is extremely 'sticky' on a molecular level, identifying a particular molecule within a saliva sample is challenging. Credit Photo by Matthew Modoono for Forsyth Institute Usage Restrictions None License Licensed 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.