Drug Test Results in US Before and After Declaration of a National Emergency Concerning COVID-19

This substance use epidemiology study uses a commercial urine drug testing (UDT) service ’s data to compare UDT results for cocaine, fentanyl, heroin, and methamphetamine before vs after US declaration of coronavirus disease 2019 (COVID-19) as a national emergency among patients diagnosed with or at risk of substance use disorders.
Source: JAMA - Journal of the American Medical Association - Category: General Medicine Source Type: research