Research & Education JFS Articles AAFS Connect Conference Proceedings Reference Series Library International Educational Outreach Program The Analysis of PM Oral Swabs by SPE and LC - MSMS for Fentanyl as an Indicator of Administration Presenting section: Toxicology 2009 Hackett, Jeffery, Liverpool UNITED KINGDOM; Elian, Albert A., Needham MA; Osiewicz, Robert J., East Amherst NY View the paper Toxicology