Health Services/Technology Assessment Test (HSTAT)HSTAT is part of the expanded Health Services Research Information Program coordinated by the National Library of Medicine. HSTAT works to improve the organization and dissemination of the results of health services research, including practice guidelines and technology assessments. It provides a one-stop shopping for evidence reviews from multiple sources including the Agency for Healthcare Research and Quality, U.S. Preventive Services Task Force evidence reviews, Reports of the Surgeon General, and other governmental and non-governmental evidence reports.