Amphetamine Positive Urine Toxicology Screen Secondary to Atomoxetine
News Feb 28, 2013
The aim of this paper is to report the first case of atomoxetine leading to false-positive urine drug screen. An otherwise healthy 27-year-old female with a history of attention deficit hyperactivity disorder (ADHD) treated with atomoxetine had an acute onset tonic-clonic seizure. On arrival to the hospital, a urine toxicological drug screen with immunochemical cloned enzyme donor immunoassay (CEDIA) was performed. Results were positive for amphetamines; however, the presence of these substances could not be confirmed with urine gas chromatography-mass spectrometry (GC-MS). She denied any illicit drug use, herbal medications, or supplements, and her other prescription medications have not been previously known to cause a false-positive result for amphetamines. While stimulant treatments for ADHD could certainly result in a positive result on urine screen for amphetamines, there have been no reports of false-positive results for amphetamines secondary to patients using atomoxetine. We implicate atomoxetine, and/or its metabolites, as a compound or compounds which may interfere with urine drug immunoassays leading to false-positive results for amphetamines CEDIA assays.
This article was published online in Case Reports in Psychiatry and is free to access.
Concept Life Sciences and Alderley Analytical Partner to provide Bioanalytical and DMPK ServicesNews
Companies announced they have signed a partnership agreement to provide high-value bioanalytical and DMPK study services.READ MORE
New Partnership to Provide Bioanalytical and DMPK ServicesNews
Concept Life Sciences, the integrated drug discovery, development and analytical services company, and Alderley Analytical, bioanalytical Contract Research Organisation (CRO), today announced they have signed a partnership agreement to provide high-value bioanalytical and DMPK study services.