EVIDENCE LIBRARY
Browse source-supported forensic toxicology guides in this subject area.
Oct 20, 2026
A 12-person placebo study found aversive ratings and selective digit-copy changes after smoked cannabis, but Go/No-Go postdose and N-Back results were null.
Read guideOct 20, 2026
In 66 men’s DUID cases, CYP2C9*3 tracked lower plasma THC-COOH, but parent THC was not significantly different. Original GC-MS and forensic limits.
Read guideOct 20, 2026
A 24-donor lab experiment found higher blood viscosity with added THC or CBD. Learn the exact results, null findings, and limits on clinical or DUI claims.
Read guideOct 20, 2026
A complete 2017 mouse study found concurrent CBD attenuated selected THC-related memory and behavioral deficits despite approximately 30% higher measured plasma THC. What it proves—and cannot prove—for forensic impairment.
Read guideOct 20, 2026
Original 2022 study of 14 rheumatoid arthritis tissue donors: THC increased TRPA1-linked calcium, reduced MMP-3 only alongside high-dose cell loss, and changed PBMC cytokines differently. What it cannot prove about human THC or impairment.
Read guideOct 20, 2026
In 144 zebrafish, cannabis oils altered aluminum-associated social behavior and enzyme assays, but did not restore every tank behavior or establish human treatment.
Read guideOct 20, 2026
A five-patient CBD-product emergency study found negative urine THC screening with detected serum THC-COOH. Understand matrices, cutoffs and causation limits.
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A primary study of 23 men found a lower plasma cytokine composite after CBD-rich cannabis, but no significant plasma THC difference or memory interaction.
Read guideOct 20, 2026
A controlled cannabis case reports whole-blood THC 16 ng/mL, acute perceptual symptoms, and route differences. Learn what the evidence cannot prove.
Read guideOct 20, 2026
Can 11-OH-THC glucuronide prove impairment? Original synthesis and ten-serum, ten-urine results show what chemistry establishes—and what it cannot.
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