Browse the latest forensic toxicology articles or search the collection.
-
Can Years of Schooling Stand In for Cognitive Ability in Methamphetamine Research?
A historical study of 36 methamphetamine-dependent participants and 42 controls shows why educational attainment may be an unreliable substitute for directly measured cognition.
-
Does Methamphetamine Change Brain Connectivity Everywhere? A 22-Adult Resting-State Experiment
A controlled experiment found seven altered connections between brain networks, with no significant within-network effect after correction. Connectivity changes did not track subjective effects.
-
Can an Insula Scan Predict Relapse? Reading a 63-Person Methamphetamine Follow-Up Study
A historical study linked risk-task brain responses with later self-reported drug use. Its selected sample, outcome definition and same-cohort modeling limit individual prediction.
-
Does a Lower Brain Response to Gentle Touch Mean Less Pleasure? A Methamphetamine-Abstinence Study
A historical imaging study found group differences in brain responses to gentle touch, but no significant group difference in reported pleasantness or task accuracy.
-
Hospital Ethanol Specimens in Death Investigations: Why Serum and Whole-Blood Results Differ
A 39-case comparison found strong correlation but significant bias between hospital and forensic ethanol results. Collection timing, matrix and sample identity remain essential.
-
Why Postmortem Cannabinoid “Serum” Cannot Use Living-Person Conversion Factors
Postmortem centrifuged blood supernatant is a distinct specimen. A 25-case study found THC and THCCOOH ratios that caution against importing clinical plasma conversions.
-
Postmortem THC Redistribution: What Central-to-Peripheral Blood Ratios Can Show
A 25-decedent study found modest median cannabinoid blood-site differences, substantial individual variation and no basis for a universal antemortem correction factor.
-
Acidic Drugs in Vitreous Humor: Why Detection Does Not Establish a Blood Concentration
An 89-autopsy study found drug-specific differences between vitreous and peripheral blood. Strong correlations for small antiepileptic subsets require caution.
-
Can Vitreous Humor Replace Blood for Postmortem Drug Screening?
A 51-autopsy GC–MS study shows the value and limits of vitreous screening, including missed findings, matrix-specific calibration and restricted quantitative interpretation.
-
Does Methamphetamine Increase Effort Because It Feels Good? A 96-Adult Experiment
A controlled experiment found more high-effort choices after oral methamphetamine, especially among lower baseline performers. Effort changes were not correlated with increased euphoria or drug liking.
-
Does Methamphetamine Euphoria Match the Brain’s Response to Reward Cues? An 88-Person Imaging Analysis
A controlled study found increased euphoria and a loss-anticipation brain signal, without the expected correspondence between drug-induced reward-cue activity and subjective effects.
-
Can Amphetamine Restore Memory in Aged Rats? What the 2024 Experiments Actually Show
A rat study linked amphetamine to selected memory and brain-tissue changes. Its results support a preclinical hypothesis, not a treatment recommendation for human aging.
-
Do More Amphetamine Blood Tests Mean More Drug Use? The Ascertainment Problem
Testing volume depends on who is stopped, sampled and submitted. A historical Swedish report shows why submission counts cannot independently measure population drug use.
-
Does the Methamphetamine High Peak With the Plasma Level? Three Different Timelines
A historical review describes subjective effects peaking before plasma methamphetamine after smoking. Feeling, concentration and task performance require separate timelines.
-
Methamphetamine and Violence: Why Victim Toxicology Cannot Identify a Perpetrator’s State of Mind
Historical homicide toxicology concerns the tested victim. It cannot establish a perpetrator’s exposure, intent or a drug-caused act of violence.
-
Do Age and Sex Predict Blood Amphetamine Concentrations? Reading a 300-Driver Study
A historical Swedish study found a weak age association and no significant sex difference. Neither finding supplies an individual dose or impairment estimate.
-
Methamphetamine Screening and Confirmation: What a Laboratory Packet Should Show
Screening, chemical confirmation and interpretation are separate steps. A historical case report shows why the method and specimen record matter.
-
Amphetamine and Fatigue: How to Read Historical Pilot-Performance Research
Historical aviation studies distinguish restoration of sleep-deprived performance from general enhancement and do not establish driving safety for an individual.
-
Can the Methamphetamine-to-Amphetamine Ratio Date Drug Use?
Metabolite ratios change with time, but repeated dosing, specimen differences and elimination variability prevent treating a single ratio as a reliable clock.
-
Chiral Methamphetamine Testing: What d- and l-Isomers Can Reveal
Isomer testing adds information to a methamphetamine result, but drug-source attribution also requires medication history and method-specific evidence.