By Quest Diagnostics
This interactive map shows urine drug test positivity by 3-digit zip code in the United States. The Quest Diagnostics Drug Testing Index™ is a comprehensive analysis of workforce drug use trends. This map is an analysis of the combined U.S. workforce.
Quest. (2019). Drug Testing Index. Retrieved from http://dtidrugmap.com/?fbclid=IwAR1KoPNeEvaanXZKomBub_DinqjDyef7A8u624_aLBEOrswHNsKqDluFevM
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