The test came out of DARPA, the U.S. military’s research division, and may be granted an accelerated emergency use authorization by the FDA by the end of the week, according to The Guardian.

If the test works as expected, it could play a major role in preventing future outbreaks by letting people know they need to self-isolate well before they start spreading the coronavirus.

“The concept fills a diagnostic gap worldwide,” Dr. Brad Ringeisen, head of DARPA’s biological technologies office, told The Guardian. He added that, should the FDA approve the test for use, it could be “absolutely a gamechanger.”