Why does the Department of the Interior handle drug testing?
The U.S. Department of the Interior’s mission is to protect America’s natural resources and heritage, honor our cultures and tribal communities, and supply the energy to power our future. To learn more about DOI visit www.doi.gov. The National Business Center, within the Department, supports the Offices and Bureaus within the Department, as well as federal agencies outside the Department, as a Shared Service Center. Drug and alcohol testing are one of the many services NBC offers.