A microfluidic device invented at the University of Michigan and developed by U of M startup Optofluidic Bioassay may offer a cheaper, faster, and much more reliable antibody test than those currently being rushed to market to trace the spread of COVID-19. A microfluidic device is described by the company as a “lab on a chip,” meaning that it shrinks multiple lab testing functions onto a single chip just millimeters or centimeters in size. The technology enables faster results for coronavirus antibody testing with smaller sample sizes.