Recently, Quest Diagnostics, a company offering drug-testing services to employers, issued a report highlighting year-over-year double-digit increases in positive urine tests for marijuana between 2015–2017 in almost one-third of all U.S. industry sectors.  The company has catalogued over thirty years of national workplace drug positivity trends, and it reports significant increased positive tests both in the general workforce and the federally-mandated, safety-sensitive workforce.  The increased rates of positive detections have been most “striking” in states…