COVID-19 saliva test (IMAGE) Rockefeller University Caption Stored in orange-capped vials for mass distribution, the DRUL buffer is part of an inexpensive saliva-based COVID test developed at Rockefeller. Credit Rockefeller University Usage Restrictions Image may only be used to describe research described in the accompanying release. 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.