e-ISSN: Pending
Negative / Null Result ReportMedicine

Underutilization of fentanyl testing masks substantial fentanyl exposure in routine urine drug screens in Indiana.

Olaniyan H; Beckman J; Crosby E; Shepherd D; Dahal S; Greene D; Zimmerman MK; Dahal RA · 2026 · Clinica chimica acta; international journal of clinical chemistry

WASTE classifies this as Negative / Null Result Report · AI classification, approximate

The study found no significant effect — useful as a negative control or null benchmark for your own design.

Abstract (excerpt)

Objectives Timely and locally relevant drug testing is helpful for overdose assessment; however, immunoassay (IA)-based urine drug screens (UDS) often fail to detect emerging substances. This study assesses fentanyl screen utilization and…

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Metadata source: Europe PMC · DOI 10.1016/j.cca.2026.120948