EVIDENCE LIBRARY
Browse source-supported forensic toxicology guides in this subject area.
Oct 20, 2026
A 49-person sham-controlled trial tested 20 sessions of iTBS, methamphetamine-word Stroop errors, N1/P3 EEG and beta power. Learn what significant and null results permit—and what blood toxicology it never measured.
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Original four-dose crossover: 3 and 6 mg/kg caffeine shortened reaction times in 14 young female athletes; 9 mg/kg was not better than placebo and drew more symptom reports. No blood caffeine measured.
Read guideOct 20, 2026
Original forensic study: eight laboratories showed smaller hair drug-test CVs with immersed matrix reference materials. Understand washing, homogeneity and limits.
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Original n18 adult ADHD crossover: delayed word recall improved before CES-D adjustment, lost statistical significance afterward. Genuine nulls and forensic limits.
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Can TNF, COMT, PER3 or ADORA2A variants predict caffeine vigilance benefits? Explore a 37-person crossover trial, true null findings and forensic limits.
Read guideOct 20, 2026
An 88-man original MRI study found four adjusted cognitive differences but six null results. Brain cortical thickness is not a methamphetamine blood or DUI test.
Read guideOct 20, 2026
An original 21-patch, 11-person GC–MS study detected cocaine and cocaethylene in sweat. Learn what 12.5 ng/patch detects—and cannot prove about dose, alcohol, or impairment.
Read guideOct 20, 2026
An original 41-adult ADHD subgroup had just two placebo patients. See what lisdexamfetamine symptom changes show—and what blood testing was absent.
Read guideOct 20, 2026
In 16 adults, oral methamphetamine altered some low-dose alcohol cognition and sleepiness tests. Oral fluid and breath were measured—not blood impairment.
Read guideOct 20, 2026
In 20 abstinent methamphetamine patients rescanned, sexual-picture fMRI contrasts differed late in abstinence, but between-session recovery was unclear. Examine the data and forensic limits.
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