Revolutionizing Drug and Alcohol Testing Across the Nation. Comprehensive Drug Screening is one of the largest drug testing companies in the United States. We have over 10,000 collection sites that can provide drug and alcohol testing nationwide. Comprehensive Drug Screening specializes in federal DOT drug testing, non-DOT drug testing, alcohol testing, random consortium's, drug-free workplace programs, and more. Our team of professionals can help you schedule a drug test anywhere in the US by calling our office at 800-713-5971 or you can order a drug test online, 24/7. We are also your complete drug-free workplace solution for employers. We provide drug testing for all reasons such as pre-employment, random, reasonable suspicion, post-accident, and return to duty. We have a state-of-the-art cloud-based software that allows you to order drug testing 24/7, store all drug test results and chain of custody forms (forever), and you can see the status of all completed drug testing. We have random drug and alcohol testing consortium's and follow all DOT rules and regulations to direct your company in the right direction to stay in compliance. We can create drug-free workplace policy manuals specific to your company’s needs, and we provide online training. Our online training offerings are perfect for company Supervisors to learn what signs and symptoms to look for if someone might have used a prohibited substance. We also have courses that explain what Supervisors should know about the Department of Transportation (DOT) drug and alcohol testing rules and regulations. We are members in good standing with the Drug and Alcohol Testing Industry Association (DATIA), and our team stays up to date with all employee drug testing-related rules and regulations. If you have any questions about federal- or state-specific laws regarding drug and alcohol testing, please contact our office and one of our team members will be glad to help you. If your company would like more information regarding setting up a corporate account, contact us at 800-713-5971.