A new coronavirus test uses gene-hacking tech to determine whether someone is sick with COVID-19 — and it only costs $6 to make.

Because there are still too few tests to go around, a pair of MIT researchers set out to build something to be as low-cost and self-contained as possible, The New York Times reports. The result is a two-step test that uses CRISPR to scan a patient’s saliva or nasal swab for signs of the coronavirus’ genetic code.

“We’re excited that this could be a solution that people won’t have to rely on a sophisticated and expensive laboratory to run,” said Feng Zhang, a researcher at MIT and the Broad Institute who developed the test, told the NYT.