A Two-Year Evaluation of Flualprazolam Concentrations in Orange County Drivers: Effects on Driving and Field Sobriety Test Performance.

Starting in early 2017, flualprazolam was detected in toxicology and seized drug cases across the USA. Due to the addition of fluorine to alprazolam, flualprazolam's chemistry was enough to bypass targeted toxicology confirmations, and it has become increasingly available for purchase both on the dark web and in counterfeit pills. Flualprazolam was added to the exact mass screening regiment of the Orange County forensic laboratory in December 2018.

Prevalence of Five Commonly Analyzed Cannabinoids in Forensic Toxicology Casework from Orange County CA, USA, from 2016 to 2019.

Over the last 25 years, marijuana laws have been changing throughout the USA. California started legalizing medicinal marijuana in 1996 and has since continued to relax laws. Compared to Washington and Colorado, there are little data on how the changing laws have affected the cannabinoid detection rate in California.