Browse every published article, from the latest research to earlier analysis. Use the page numbers below to explore the complete archive.
Two published methamphetamine-driving cases illustrate why a blood concentration cannot stand in for a description of behavior. The drivers had broadly comparable methamphetamine results but markedly different presentations: one was cooperative after unsafe lane changes, while the other drove at extreme speed and resisted arrest. These are case reports, not a controlled experiment or a…
A controlled d-methamphetamine simulator study found no significant overall driving difference. Its individual findings, blood results and limitations matter.
A six-person study found positive breath-alcohol-equivalent readings after veterinary ethanol use. No blood BAC or driving impairment was measured.
Controlled human studies have found improvements in selected attention, working-memory, and memory tasks after methamphetamine administration. The findings depend on the task, population, dose, and sleep.
A randomized crossover study of 26 healthy participants measured on-road lane control after vaporized cannabis. THC-dominant and THC/CBD-equivalent product
Three controlled studies show how alcohol can affect contrast sensitivity, retinal straylight and depth perception even when eye-chart acuity appears adequate—and what those findings cannot prove.
A scientific explainer of total THC and THCA in plant material.
A 31-volunteer study found alcohol-related changes in balance and selected vestibulo-ocular reflex measurements, with important limits for forensic interpretation.
How ADH1B and ALDH2 genetic variants affect ethanol and acetaldehyde metabolism—and why they cannot independently establish an earlier BAC.
A forensic toxicology review of why blood or serum ethanol concentration is not a direct measurement of ethanol in the brain, and why timing and physiology matter.
A forensic toxicology review of why blood or serum ethanol concentration is not a direct measurement of ethanol in the brain, and why timing and physiology matter.
Two medetomidine studies show why surveillance denominators, confirmation methods, and dexmedetomidine treatment timing matter in toxicology review.