Testing the test strips: laboratory performance of fentanyl test strips

Original research
par
Halifax, John C. et al

Date de publication

2024

Géographie

USA

Langue de la ressource

English

Texte disponible en version intégrale

Oui

Open Access / OK to Reproduce

Oui

Évalué par des pairs

Yes

L’objectif

We evaluated the efficacy of multiple manufacturing lots of a fentanyl test strip (FTS) to detect fentanyl and fentanyl analogs and assessed cross-reactivity with possible interferences.

Constatations/points à retenir

All five manufacturing lots cross-reacted with fentanyl and eleven fentanyl analogs. Diphenhydramine, lidocaine, MDMA, and methamphetamine were found to cause false positives with the strips. There was notable lot-to-lot variability in the sensitivity of the strips for fentanyl, fentanyl analogs, and known interferences.

La conception ou méthodologie de recherche

Drug standards were dissolved in water in a laboratory setting and serially diluted. Drug dilutions were tested using five different manufacturing lots of BTNX Rapid Response (20 ng/mL cutoff) lateral flow chromatographic immunoassay strips to assess lot-to-lot variability for FTS sensitivity and cross-reactivity for the analytes of interest.

Mots clés

Drug checking