EVIDENCE LIBRARY
Browse source-supported forensic toxicology guides in this subject area.
Oct 20, 2026
In a 31-user mobile-lab study, plasma THC plus metabolites tracked word-recognition accuracy. Learn what d-prime findings cannot prove about a person’s impairment.
Read guideOct 20, 2026
Original 43-person controlled study: CBD-rich oil containing THC, urine THC-metabolite screening through 144 hours, and mostly unquantifiable plasma parent THC. Forensic limits.
Read guideOct 20, 2026
A primary female-rat study found adult recognition-memory deficits after THC, THC-rich/CBD-poor, and CBD-rich/THC-poor adolescent injections, with different stress and brain outcomes. Learn the forensic limits.
Read guideOct 20, 2026
An original 16-donor cell-culture THC study found dose-dependent DNMT, TET and DNA hydroxymethylation changes—not a blood-THC or driving-impairment test.
Read guideOct 20, 2026
A primary WT-ESI-MS study found a 40,000 ng/mL THC detection limit in fortified urine and oral fluid. Learn why this cannot validate forensic impairment.
Read guideOct 20, 2026
Original APP/PS1 mouse research found THC plus CBD changed evoked hippocampal glutamate without rescuing LTP or spines. Explore the forensic limits.
Read guideOct 20, 2026
Primary forensic data from 18 drug-exposed pigs compare IV JWH-210, RCS-4 and THC in bile, kidneys, lungs, brain, fat and vitreous—without implying human impairment.
Read guideOct 20, 2026
A placebo-controlled human THC study measured serum metabolites and vigilance, but its 80% use-history classifier did not validate individual driving impairment.
Read guideOct 20, 2026
A 718-teen roadside study found 28 denials with positive THC tests and 17 discordant blood/oral-fluid pairs. Why neither proves a lie or impairment.
Read guideOct 20, 2026
A 941-patient THC/CBD prescription registry noted 63 driving improvements, 19 declines and 514 inapplicable responses. Why it cannot prove individual impairment.
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