Prick the finger (IMAGE) University of Utah Caption The NanoSpot.AI rapid COVID-19 antibody test is performed on blood collected through a finger prick using a microcollection tube. Droplets of blood are then placed on three spots on a ready-to-use, synthetic, embossed card. One of the spots displays the test result, while the other two spots are positive and negative controls for the test. Credit NanoSpot.AI Usage Restrictions Non commercial with attribution 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.