Molecular biologist Feng Zhang is co-inventor of CRISPR, a gene-editing system its inventors say can determine in an hour if someone is infected with the coronavirus. (Joel Achenbach/The Washington Post)

The Food and Drug Administration on Thursday approved a new diagnostic tool that employs the revolutionary CRISPR gene-editing technology to determine if someone is infected with the novel coronavirus.

The FDA’s emergency use authorization allows only “high-complexity” laboratories to use the test kit, developed by researchers at the Massachusetts Institute of Technology, Harvard University, the Ragon Institute and the Howard Hughes Medical Institute and marketed by Sherlock Biosciences of Cambridge, Mass.