Fentanyl and fentanyl analogs may result in a false positive immunoassay for what drug?
Fentanyl and at least one select analog have been implicated as the cause of a false positive LSD immunoassay. (Clin Chem 2002;48:205-206 https://doi.org/10.1093/clinchem/48.1.205 and Toxicology Letters 2020;320:109-112 https://doi.org/10.1016/j.toxlet.2019.11.025)
Submitted by M. Hodgman, MD on behalf of the Herbs and Dietary Supplements Special Interest Section
Posted in Question Of The Day