Contact Plano Drug Testing in Coppell. They work with employers who want to uphold a drug-free standard in their workplace. They are a great partner for businesses requiring drug screenings, whether for an immediate test or compliance with standard requirements. They also conduct mobile drug testing and onsite drug testing for companies that require Department of Transportation (DOT) compliance. For more info call them on this number (469) 573-0547 & visit their site: Link