Engineers Design New Face Masks With Test Strip to Detect COVID â Much Like a Pregnancy Test Jan 30, 2021 Similar to a classic pregnancy test, a color-changing strip may, in the future, be mounted on face masks to detect the presence of COVID-19 in the air you breathed that day, allowing everyone to self-monitor the environments they pass through. The project was launched by nanoengineers at UC San Diego with a $1.3 million grant from the NIH’s Rapid Acceleration of Diagnostics Radical (RADx) program. The scientists created a small test kit to attach to the front of any mask, which can...