Forty percent of U.S. Covid-19 tests come back too late to be clinically meaningful, data show
August 15, 2020 at 11:00 AM EDT
Public health experts say Covid-19 test results need to be returned within two to three days to be clinically meaningful. A CNBC/Dynata survey of 9,444 Americans in all 50 states shows almost 40% of tests took longer. And there's major variation state by state.
