Span functions as a THIRD PARTY ADMINISTRATOR, coordinating services between our customer (agency, court, legal or employer), the collection site and the laboratories, in order to help you choose the most appropriate type of drug screening, and to provide it to you at the best possible price. Span also provides certified reporting, random drug test management programs, program development, drug screen results archiving, Medical Review Officer (MRO) services, and functions as a call center, fielding and answering your questions, or funneling those questions to the appropriate professionals.