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Trials to join now! 1 Not yet recruiting 1 Completed 1

Cannabis study reveals how THC and CBD impact impairment and drug tests

Knowledge-focused Completed

This completed Phase 1 study at UCLA looked at how smoking cannabis with different amounts of THC and CBD affects drug levels in oral fluid and blood, as well as thinking and feeling. Nineteen adults who use cannabis occasionally took part. The goal was to better understand how t…

Matched conditions: IMPAIRMENT

Phase: PHASE1 • Sponsor: University of California, Los Angeles • Aim: Knowledge-focused

Last updated Jun 27, 2026 11:04 UTC

IMPAIRMENT

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Cannabis study reveals how THC and CBD impact impairment and drug tests