Measuring Environmental Tobacco and Cannabis: Pollutants and Exposures
Recruiting now · Not applicable
Conditions studied: Healthy
In brief
This is an unblinded pilot study of an environmental exposure to secondhand cannabis smoke in one group of healthy nonsmokers.
Key facts
- Study ID
- NCT06030674
- Run by
- University of California, San Francisco
- People needed
- 200
- Starts
- 2023-09-01
- Expected to finish
- 2027-06-30
- Last updated by the study team
- 2026-06-16
Who can join
Age: 21 and older, up to 50. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- Adult nonsmokers, aged 21-50, who:
- Are healthy on the basis of medical history
- Have systolic blood pressure <150
- Have diastolic blood pressure <100
- Have BMI between 18.1 and 34.9
- Able to perform moderate exercise,
- Are not exposed to tobacco or cannabis SHS in their daily lives. (Nonsmoking status and low SHS exposure are determined by self-report on the screening questionnaire, salivary cotinine < 10 ng/ml and THC < 50 ng/m and exhaled CO2 below 4 ppm)
You may not qualify if…
- Current use of cannabis products, including CBD and edible THC products
- Regular exposure to secondhand tobacco or cannabis smoke
- Positive SARS-CoV-2 antibody test
- Age 18 < or > 50
- Physician diagnosis of asthma, heart disease, hypertension, thyroid disease, diabetes, renal or liver impairment or glaucoma.
- Unstable psychiatric condition (such as current major depression, history of schizophrenia or bipolar disorder) or current use of more than two psychiatric medications
- Systolic blood pressure > 150
- Diastolic blood pressure > 100
- Pregnancy or breastfeeding (by urine hCG and/or history)
- Alcohol or illicit drug dependence within the past 5 years
- BMI > 35 and < 18
- Current illicit drug use (by history or urine test)
- More than 1 pack year smoking history
- Ever a daily marijuana smoker
- Smoked anything within the last 2 months
- Occupational exposure to smoke, dusts OR fumes
- Concurrent participation in another clinical trial
- Unable to communicate in English
- No social security number
Where it is running
- Zuckerberg San Francisco General Hospital — San Francisco, California, United States (enrolling)
Full record on ClinicalTrials.gov
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