Measuring Environmental Tobacco and Cannabis: Pollutants and Exposures

Part of paid clinical trials in San Francisco, California.

Sponsor
University of California, San Francisco
Study ID
NCT06030674
Status
Not Yet Recruiting

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Conditions

  • Healthy

Eligibility Criteria

Sex
ALL
Age
21 Years - 50 Years
Healthy Volunteers
Accepted

Interventions

  • Secondhand cannabis emissions/smoke exposure — OTHER
    This is an environmental exposure performed in public places where people are consuming cannabis.

Study Details

This is an unblinded pilot study of an environmental exposure to secondhand cannabis smoke in one group of healthy nonsmokers.

Key Dates

Start date
Sep 1, 2023
Status verified
Sep 2023
Primary completion
Jun 30, 2025
Completion
Jun 30, 2026

Study Design

Enrollment
200 participants (estimated)
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE

Arms

  • Experimental: Exposure to secondhand cannabis smoke in public places
    The research staff and participants will travel together to a public location by either ride share vehicles, taxis or public transit. The study will arrange and pay for the transit. Staff and participants will be exposed to ambient air in public places where cannabis products are being consumed by smoking, vaporizing or dabbing. Participants will remain in the company of the laboratory staff throughout the exposure. The exposures will last 0.5-4 hours, depending on the nature and duration of the event. Staff and participants will travel together back to the laboratory for the post-exposure study measures.

Primary Outcome Measure

Change in the concentration of urinary cannabinoid metabolites in health nonsmokers exposed to cannabis smoke and emissions [ Time Frame: Baseline (before exposure) and the morning after exposure, up to 22 hours. ]

Central Contacts

Locations (1)

FacilityCityStateZIPSite coordinators
Zuckerberg San Francisco General HospitalSan FranciscoCalifornia94110-

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Zuckerberg San Francisco General Hospital· San Francisco, CA

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