Monday, June 07, 2021

Field Sobriety Tests, THC Levels Unreliable Indicators of Marijuana Intoxication

 In an effort to better understand marijuana intoxication and, ultimately, improve marijuana intoxication legislation, NIJ-supported researchers from RTI International studied how specific cannabis doses, and whether it was eaten or vaped, affect THC levels in the body and how that correlates with performance on impairment tests.

Researchers found that biofluid levels of THC did not correlate with field sobriety test performance or marijuana intoxication, regardless of how the cannabis was ingested. In addition, they observed that standardized field sobriety tests commonly used to detect driving under the influence of drugs or alcohol were not effective in detecting marijuana intoxication.

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