Clinical Reference Laboratory is the largest privately held SAMHSA certified laboratory in the country. We have a passion for better outcomes powered by greater insights and are committed to progressing in ways that help our customers achieve success. We have dedicated facilities in North America and Europe, with over 275,000+ square-feet of laboratories, logistics and office space. Our staff of over 700 associates works around-the-clock to process and report results seven days a week. We serve many of the largest organizations in the world in retail, transportation, pharmaceutical, healthcare and finance. Discover how our commitment to quality, innovation, electronic workflows, data analytics and service excellence create an advantage for our customers.