Research & Education JFS Articles AAFS Connect Conference Proceedings Reference Series Library International Educational Outreach Program Identification of Fentanyl in Urine From Drug Abuse Cases Using a Direct Multistage Mass Spectrometry Method Presenting section: Toxicology 2006 Shakleya, Diaa M., Germantown MD; Kraner, James C., South Charleston WV; Callery, Patrick, Morgantown WV View the paper Toxicology