Secondhand cannabis emissions/smoke exposure
This is an environmental exposure performed in public places where people are consuming cannabis.
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This is an unblinded pilot study of an environmental exposure to secondhand cannabis smoke in one group of healthy nonsmokers.
Locally preserved from ClinicalTrials.govOpen ClinicalTrials.govlast source update 2026-06-16
What this record can show
This locally preserved record separates the registered protocol from source-reported registry results. Neither is a treatment recommendation.
Registry facts
The goal is to gather accurate information on uptake of smoke toxicants from cannabis exposures in the real world. The investigators will be taking healthy nonsmokers to public places where people are consuming cannabis and measuring their uptake of cannabinoids.
Linked local records
Local links use governed condition terms or exact source-reported intervention names. They are navigation candidates, not efficacy claims.
Interventions
This is an environmental exposure performed in public places where people are consuming cannabis.
Eligibility
primary outcomes
Time frame: Baseline (before exposure) and the morning after exposure, up to 22 hours.
The concentration of 11-Nor-9-carboxy-THC will be measured in urine with LC/MS-MS. The LOQ for this assay is 15 pg/ml. Anticipated changes in concentration are from BLOQ to 0.5-20 ng/ml. The duration of the exposures will depend on the event or venue at which exposures occur, ranging from 30 minutes to 4 hours. The investigators will compare the concentration of 11-Nor-9-carboxy-THC in participants' urine before exposure to concentrations in the first void of the morning after the day of exposure.
Publications
No exact PMID-linked public article is currently readable locally.