The detection of cannabinoids in breath after ingestion of cannabis-infused edibles

Abstract The increase of Δ9-tetrahydrocannabinol (THC) in breath after cannabis inhalation has been well-documented in the forensic field, but the trends after ingestion of cannabis-infused edibles have not yet been investigated. In this study, participants ingested a cannabis-infused edible and provided breath samples before and at three timepoints after ingestion. Participants were assigned to one of two breath sampling devices. THC was found in most pre-use breath samples, and THC concentration had variable trends after ingestion. Nineteen participants exhibited a