All Articles
Browse every published article, from the latest research to earlier analysis. Use the page numbers below to explore the complete archive.
Can Breath Alcohol Peak More Than an Hour After the Last Drink?
A 42-person 2026 study found breath alcohol peaks from 23 minutes before to 76 minutes after the final drink. What that means—and cannot prove.
Does Urine Alcohol Prove a Hangover? What a Morning-After Study Measured
A 36-person study found residual morning urine ethanol, but no significant correlation with overall hangover severity. Learn what the urine result cannot prove.
Do CBD and THC Nanoemulsions Damage Kidneys? Rat Histology Is Not Kidney Function
Rat kidney histology changed after 21 days of some CBD/THC nanoemulsions. Why tissue markers do not prove kidney failure or human causation.
Can Alcohol Affect Standing Balance Even When Gait Measures Stay Similar?
Can alcohol change standing balance when walking measures show little difference? A force-plate study explains center of pressure, BrAC and limits of impairment inference.
Does Alcohol Temporarily Reduce Hearing Sensitivity? What Pure-Tone Audiometry Shows
Can drinking raise pure-tone hearing thresholds? Review the 26-person audiometry study, frequency shifts, breath alcohol limits, and why this cannot prove a witness missed a warning.
Can Postmortem Bile or Muscle Alcohol Replace a Blood Alcohol Test?
Can bile or muscle ethanol stand in for blood BAC after death? A 378-autopsy study shows why specimen correlations do not justify direct conversion.
Can Hemodialysis Remove Alcohol Faster Than the Liver? What a Case Shows
A severe ethanol-poisoning case showed approximately fourfold faster serum ethanol decline during hemodialysis. What was measured, calculated and not proven?
Can a Five-Minute Urine Drug Test Miss Benzodiazepines? A Microfluidic Validation Study
A 2026 five-minute microfluidic urine study detected 6 of 13 benzodiazepine-positive specimens. See the four drug-channel findings and limits.
Can Delta-8 THC Vaping Disrupt Airway Cilia? The Δ8-THCQ Evidence
Short answer: A 2026 laboratory study found that aerosols from several high-concentration delta-8 THC vaping products reduced the beating activity of human airway cilia under experimental conditions. The researchers also detected increased concentrations of an oxidation product, delta-8 THC quinone (Δ8-THCQ), after vaping distillates and disposable products. These findings identify a plausible mechanism of airway…
Oral Cannabis Pharmacokinetics: Why Testing Time and Specimen Matter
A controlled oral-cannabis study measured blood and oral-fluid cannabinoid concentrations after brownies containing 10, 25, or 50 mg THC.
Missing Blood Is Not a Negative Result: Reading Postmortem Methamphetamine Specimen Gaps
Distinguish unavailable, untested and undetected specimens. Learn why changing case counts and missing paired blood limit postmortem methamphetamine comparisons.
Alcohol Digital Twins: Can BAC, EtG, EtS and Urine Alcohol Reconstruct Drinking Time?
A 2026 model integrates BAC, EtG, EtS, and urine alcohol to compare drinking timelines. Explore its validation, limitations, and potential forensic applications.
Alcohol Absorption Is Not a Straight Line: Gastric Emptying, Beverage Type, and the Shape of the BAC Curve
How gastric emptying, beverage strength, and meal conditions influence ethanol absorption and why simplified BAC assumptions can mislead forensic interpretation.
Why a Negative Rapid Urine Drug Screen Does Not Rule Out Drug Exposure
A negative rapid urine drug screen does not always rule out exposure. Learn how panel scope, cutoffs, timing, specimen validity, and confirmation affect interpretation.
Why a Postmortem Drug Screen Cannot Replace Comprehensive Toxicology
Learn why rapid postmortem drug screens are preliminary and how specimen type, cutoffs, GC-MS, LC-MS/MS, and complete case records affect interpretation.
Urine Specimen Validity Testing: What Contamination Can Change
Learn how dilution, contamination, and adulteration can affect urine drug screens, what specimen-validity tests measure, and which records matter.
On-Site Drug-Testing Device Evidence Matrix
A source-cited matrix comparing on-site drug-testing research by device, specimen, setting, cutoff, confirmation method, and study limitation.
A Positive Methamphetamine Result: Source, Isomers, and Metabolic Precursors
Learn how methamphetamine isomers, inhalers, medications, metabolic precursors, and confirmatory methods affect interpretation of a positive result.
Cychlorphine Urine Testing: Panel Coverage and Detection-Time Limits
An Estonian urine study highlights unexpected cychlorphine exposure, LC-Q-TOF-MS panel coverage, and the limits of self-reported detection times.
Brain Tissue in Postmortem Toxicology: Brain–Blood Ratios and Interpretation
Brain tissue can be valuable when postmortem blood is unavailable or compromised, but brain–blood ratios and tissue concentrations require matrix-specific validation and cautious interpretation.
Forensic Toxicology Specimen Collection and Preservation: Preanalytical Case Review
A forensic toxicology guide to specimen collection, preservatives, containers, storage, transport, sampling site, and preanalytical records that can affect interpretation.
Emerging Arylcyclohexylamines in Forensic Toxicology: Analytical Differentiation of Ketamine-Like NPS
Forensic guide to emerging ketamine- and PCP-like arylcyclohexylamines: positional isomers, LC-MS/MS, HRMS, GC-MS, NMR, and defensible identification.
Medetomidine vs Xylazine in Forensic Toxicology: Testing and Interpretation
Medetomidine and xylazine can co-occur with fentanyl, but they differ analytically. Compare targets, metabolites, enantiomers, screening gaps, and interpretation.
Validation Package Review in Forensic Toxicology
Case-focused checklist for reviewing a forensic toxicology validation package, method version, QC, raw data, calibration, interference, stability, and audit records.
Manual Peak Re-Integration in Forensic Toxicology
When manual peak re-integration is defensible in forensic toxicology, what audit trails should show, and how reviewers evaluate altered chromatographic results.
Selectivity and Interference Studies in Forensic LC-MS/MS
How forensic LC-MS/MS methods test selectivity and interference, including coeluting drugs, metabolites, isomers, matrix effects, and false-positive risks.
Autosampler Stability in Forensic Toxicology
How processed-sample and autosampler stability affect LC-MS/MS forensic toxicology results, validation, reinjection, degradation, and case review.
Failed Quality Control in Forensic Toxicology: Batch Review
How to evaluate failed forensic toxicology quality control: batch rejection, analyte-specific impact, qualitative-only reporting, root-cause review, and case records.
Stable-Isotope Internal Standards in Forensic LC-MS/MS
How stable-isotope internal standards improve forensic LC-MS/MS quantitation, where they fail, and what method validation and case review should examine.
Carryover in LC-MS/MS Forensic Toxicology: Detection, Prevention, and Case Review
How LC-MS/MS carryover is detected, controlled, and reviewed in forensic toxicology, including blanks, high-positive samples, sequence effects, and low results.