Sterile compounding practices are invited to participate in the 2015 United States Pharmacopeia (USP) <797> Compliance Study. The study, the largest and most comprehensive study of USP compliance, will remain open until June 30, 2015. The 2015 USP <797> Compliance Study uses a sophisticated, web-based <797> Gap Analysis Tool developed by Kate Douglass, MS, RN, APN, C, CRNI, and Eric Kastango, MBA, FASHP and is available at no charge to all study participants. Participating facilities will also receive a highly detailed action plan that provides documentation for beginning or continuing compounding practice improvements. More information and a link to register for and begin the study are available at www.797study.com.