Interpreting Fentanyl and Norfentanyl Concentrations among Patients Seen in the Emergency Department after a Nonfatal Opioid Overdose: A Multicenter Study.

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Title: Interpreting Fentanyl and Norfentanyl Concentrations among Patients Seen in the Emergency Department after a Nonfatal Opioid Overdose: A Multicenter Study.
Authors: Kent JT; Department of Emergency Medicine, Unity Health - St. Michael's Hospital, Toronto, ON, Canada. jekent@nosm.ca., Culbreth R; American College of Medical Toxicology, Phoenix, AZ, USA., Lebin JA; Department of Medicine, University of Colorado, Aurora, CO, USA., Burkhart K; Food and Drug Administration, Silver Spring, MD, USA., Hendrickson RG; Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA., Dezman ZDW; Food and Drug Administration, Silver Spring, MD, USA., Aldy K; American College of Medical Toxicology, Phoenix, AZ, USA.; Department of Emergency Medicine, Baylor University School of Medicine, Dallas, TX, USA., Brent J; Department of Medicine, Division of Pulmonary and Critical Care Medicine, University of Colorado School of Medicine, Aurora, CO, USA., Falise A; American College of Medical Toxicology, Phoenix, AZ, USA., Campleman S; American College of Medical Toxicology, Phoenix, AZ, USA., Logan BK; Center for Forensic Science Research and Education at the Fredric Rieders Family Foundation, Horsham, PA, USA., Levine M; Department of Emergency Medicine, University of California, Los Angeles, CA, USA., Chary M; Department of Emergency Medicine, Cornell University, New York, NY, USA., Krotulski A; Center for Forensic Science Research and Education at the Fredric Rieders Family Foundation, Horsham, PA, USA., Perrone J; Department of Emergency Medicine, University of Pennsylvania, Philadelphia, PA, USA., Wax P; American College of Medical Toxicology, Phoenix, AZ, USA.
Corporate Authors: ToxIC DOTS Study Group
Source: Journal of medical toxicology : official journal of the American College of Medical Toxicology [J Med Toxicol] 2026 Apr; Vol. 22 (2), pp. 286-295. Date of Electronic Publication: 2026 Mar 04.
Publication Type: Journal Article
Journal Info: Publisher: Springer Country of Publication: United States NLM ID: 101284598 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1937-6995 (Electronic) Linking ISSN: 15569039 NLM ISO Abbreviation: J Med Toxicol Subsets: MEDLINE; In Process
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