Covid Immunity Test (2) (IMAGE) Massachusetts Institute of Technology Caption Their test, which uses the same type of lateral flow technology as most rapid antigen tests for Covid-19, measures the level of neutralizing antibodies that target the SARS-CoV-2 virus in a blood sample. Results can be interpreted qualitatively or quantitatively. Credit Courtesy of the researchers. Edited by MIT News. Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.