A New Possible Alternative Colorimetric Drug Detection Test for Fentanyl

Abstract

A new colorimetric test using eosin Y has been developed to detect fentanyl and fentanyl mixed with cocaine and hydrocodone. This assay can be performed in solution or on a solid support, such as a piece of paper. While fentanyl can be tested with the established and currently used Marquis reagent and cocaine with the Modified Scott test, eosin Y may be an attractive alternative or complimentary test for drug identification.