The Bureau of Substance Addiction Services actively promotes practice improvement in prevention, treatment and recovery systems of care. To that end, BSAS has articulated a set of principles which inform practice. BSAS publishes Practice Guidance papers, built on these principles, which describe best practices as well as why and how practice in specific areas can be improved. These are intended to be used by BSAS substance abuse service providers in assessing and improving programs and services, and by consumers in understanding what best practice should look like. Each guidance contains summaries, with embedded links, of research and resources, as well as a link to provide feedback to BSAS.