Causing False-Positive Illicit Drug Results: A Case Report.Vincenzo Somma MD1 , Andris Ellims MBBS PhD 2 , Aleksandr Voskoboinik MBBS PhD2 , Sarah Gutman MBBS PhD1,2,3, Elizabeth Paratz MBBS PhD1,3,4Department of Cardiology, St Vincent’s Hospital Melbourne, 41 Victoria Parade Fitzroy VIC 3065.Department of Cardiology, Alfred Hospital, Melbourne, Victoria, AustraliaBaker Heart and Diabetes Institute, 75 Commercial Rd Prahran VIC 3181Faculty of Medicine, Dentistry and Health Sciences, Melbourne University, Grattan St Parkville VIC 3000.Short title: False-Positive Amphetamine Results and Cardiac MedicationsFunding Sources: EDP is supported by the Wilma Beswick Senior Research Fellowship at Melbourne University.Ethics declaration: not applicableCorresponding author: Dr Vincenzo SommaSt Vincent’s Hospital Melbourne, 41 Victoria Parade Fitzroy VIC 3065Email: vsomma023@gmail.com; Tel: +61 3 9231 2211; fax: +61 3 9231 3333Conflict of Interest: The authors have no conflicts of interest to disclose.Word count: 1063