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Genetics|January 14, 2003
Molecular population genetics of Xdh and the evolution of base composition in DrosophilaDavid J Begun, Penn WhitleyDrug and Alcohol Dependence|January 7, 2026
Use of gabapentin with or without a prescription in substance use treatment settings: A national analysis of urine drug testing data, 2016-2023Matthew S Ellis, Penn Whitley, Steven D PassikJAMA Network Open|September 10, 2021
Polysubstance Use Among Patients Treated With Buprenorphine From a National Urine Drug Test DatabaseBrendan Saloner, Penn Whitley, Leah LaRue, et al.JAMA Network Open|October 24, 2024
Fentanyl, Heroin, Methamphetamine, and Cocaine Analyte Concentrations in Urine Drug Testing SpecimensAndrew S Huhn, Penn Whitley, B Levi Bolin, et al.JAMA Network Open|July 9, 2026
Xylazine-Fentanyl Positivity and Concentration in Urine Drug TestsOlivia K Sugarman, Charles Marks, Penn Whitley, et al.Drug and Alcohol Dependence|May 23, 2026
Fentanyl overdose death rates are associated with regional differences in urine drug testing resultsAndrew S Huhn, Kelly E Dunn, Daniel Ciccarone, et al.Drug and Alcohol Dependence|August 5, 2021
Seasonal and Regional Influences on Alcohol Consumption: An Analysis of Near-Real-Time Urine Drug Test Results in Those Seeking Health CareKelly L Olson, Penn Whitley, Javier Velasco, et al.Addiction (Abingdon, England)|May 9, 2023
Polydrug use among patients on methadone medication treatment: Evidence from urine drug testing to inform patient safetyBrendan Saloner, Penn Whitley, Eric Dawson, et al.Drug and Alcohol Dependence|September 27, 2020
Fentanyl analog positivity among near-real-time urine drug test results in patients seeking health careJoseph D Stanton, Penn Whitley, Leah LaRue, et al.Journal of Addiction Medicine|December 10, 2020
The Cyclical and Evolving Nature of Methamphetamine Use: An Evaluation of Near Real-time Urine Drug Test ResultsLeah LaRue, Maria G Guevara, Penn Whitley, et al.Pageof 2