The results were highly instructive: At the 100 ng/mL threshold zero non-smoker positives At the 75 ng/mL threshold zero non-smoker positives At the 50 ng/mL threshold (the DOT initial screening standard) only a single positive occurred, even in a sealed unventilated room with heavy smoke At a 20 ng/mL threshold multiple positives occurred Maximum THC metabolite concentrations for non-smokers by GC-MS ranged from 1.3 to 57.5 ng/mL under extreme unventilated conditions The key takeaway: for someone who does not smoke to fail a drug test due to secondhand smoke, they would need to be exposed to a high concentration of smoke in an unventilated space for a prolonged period
Reference Jiang Y, Mingard C, Huber SM, Takhaveev V, McKeague M, Kizaki S, Schneider M, Ziegler N, Hrlimann V, Hoeng J, Sierro N, Ivanov NV, Sturla SJ: Quantification and Mapping of Alkylation in the Human Genome Reveal Single Nucleotide Resolution Precursors of Mutational Signatures
PMCID: PMC4567676
Tobaccoland Introduction This exhibit explores the history of the cigarette in the United States, from their initial unpopularity, to their emergence as a ubiquitous element of American life, to the rise of vaping today
Tax collections comprise approximately 40 percent of the states' total revenues
The most common question we get is exactly this how many cigarettes is a Geek Bar Pulse worth
