Application of the fentanyl analog screening kit toward the identification of emerging synthetic opioids in human plasma and urine by LC-QTOF Posted on January 4, 2022 By Becky Carter LC Krajewski, KD Swanson, WA Bragg, RL Shaner, C Seymour, MD Carter, EI Hamelin, RC Johnson Toxicol Lett; 320; 2020 Access article Chemistry, Seized Drugs/Controlled Substances