Skip to main content

An update on an incident involving one of our systems

Hide
Quest Diagnostics

Recent Decline of Designer Opioid Positivity in Clinical Specimens

SOFT-THIAFT 2026

Joint meeting between Society of Forensic Toxicologists and The International Association of Forensic Toxicologists

Chicago, IL, Sep 19-24, 2026

Poster presentation: Recent Decline of Designer Opioid Positivity in Clinical Specimens

Authors: Pacana AL, Neifeld JR, Meli TM, Yeomans NR, Bland AA, Bartock SH

Medical Specialty: Prescription drug monitoring, Toxicology

Related content

Audio Podcast
Novel Psychoactive Substances (NPS): A Dangerous, Widespread Public Health Issue
Test FAQ
Novel Psychoactive Substances (NPS) Panel
Publication
Drug Positivity, Co-Detection Patterns, and Demographic Predictors in Patients Seeking Substance Use Disorder Treatment, United States, 2023
Publication
Notes From the Field: Testing for Nonprescribed Fentanyl and Percentage of Positive Test Results Among Patients with Opioid Use Disorder — United States, 2019–2020
Publication
Prevalence of Novel Psychoactive Substances in Selected Clinical Urine Specimens Submitted for Drug Monitoring
Test FAQ
Pain Management Antipsychotics With Confirmation Serum and Urine
Test FAQ
Drug Toxicology Monitoring Oral Fluid Testing
Test FAQ
Drug Testing General Toxicology Blood or Serum
On-Demand Webinar
The Growing Crisis of Novel Psychoactive Substances
On-Demand Webinar
Practical Applications of Pharmacogenomics To Improve Patient Outcomes

Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services. 

 

Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only. May include AI-generated and/or AI-modified imagery.