All Articles
Browse every published article, from the latest research to earlier analysis. Use the page numbers below to explore the complete archive.
Can a THC Blood Cutoff Prove Impairment After an Edible? What a Ten-Study Pharmacokinetic Model Actually Shows
A ten-study THC pharmacokinetic model estimates plasma cutoff exceedance after edibles—not real driving impairment. Learn the specimen and legal limits.
Can Oral THC Peak Around Four Hours Yet Persist Before the Next Dose? A 24-Vervet Study
A 24-vervet primary study found an oral THC peak near four hours and higher day-eight predose readings. Review analytes, method limits, and forensic relevance.
Can Prenatal THC Affect Rat Memory While Anxiety Tests Remain Nonsignificant? A 43-Offspring Study
A complete rat study found selective memory and hippocampal RNA changes after prenatal THC, but several anxiety and working-memory tests were nonsignificant. Limits explained.
Can Oral THC Produce DNA-Damage Signals in Rat Brain Cells Without Changing Cholinesterase? A 30-Rat Study
Original 30-rat THC experiment: comet-assay DNA signals in brain and white cells, significant brain redox markers, and nonsignificant cholinesterase findings.
Can Exercise or Fasting Make Residual Cannabis Look Like New Use? A Six-Person Serum and Urine Study
Does a workout or a 24-hour fast explain positive urine THC? Examine six abstinent cannabis users, 188 urine specimens, 34 serum samples, and key forensic limits.
Does Prenatal THC Change Muscle Genes Without Demonstrable Fibrosis? An 18-Offspring Primate Pilot
An original 18-offspring rhesus study found prenatal THC-related muscle gene signals but no significant collagen-area difference. What can that establish?
Can Medicinal THC Slow Complex Trail Making While Reaction Time Remains Unchanged? Two Studies of 78 Patients
Original 78-patient research finds prescribed THC slowed complex Trail Making B despite no significant simple reaction-time change. What that means—and cannot prove—in DUI litigation.
Does HHC-COOH in Blood Prove HHC Consumption? What 308 Forensic Cases Reveal
Can blood HHC-COOH prove HHC use? A 308-case primary forensic study and human liver microsome experiment demonstrate why THC metabolism complicates attribution.
Can Oral THC Cause Prolonged Feed Refusal and Elevated Troponin in Sheep? An Eight-Ewe Study
Eight-ewe original THC toxicology study: ataxia, weeklong feed refusal and three elevated troponin I tests. What it does—and cannot—prove about hemp feed.
Can 364 ng/mL Serum THC Coexist With Passing Driving-Skills Tests? A Tourette Case Report
A Tourette and ADHD case report found serum THC up to 364 ng/mL alongside passing Vienna test scores. Why this cannot establish actual driving safety or a cutoff.
Do THC and CBD Oils Affect a Dog’s Heart Rhythm and Body Temperature Differently? A Six-Beagle Study
In six Beagles, THC oils cooled the dogs and changed selected ECG measures. Learn what plasma cannabinoid testing can—and cannot—prove.
Can Two Doses of THC Oromucosal Spray Produce Unpredictable Blood Results? A 20-Patient Pharmacokinetic Study
A 20-patient original THC/CBD spray study found large variation in circulating THC and modeled absorption; why it cannot reconstruct a person’s impairment.
Does Blood THC Predict Lane Weaving the Morning After Cannabis? A 130-Driver Simulator Study
A 130-driver primary study found no significant corrected simulator lane differences or THC-driving correlations 12–15 hours after smoking. See the limits.
Do THC and Alcohol Together Reduce Skeletal-Muscle Mitochondrial Respiration? What a Seven-Rat Experiment Actually Shows
A seven-rat ex vivo experiment found a stronger THC-plus-ethanol oxygen-consumption decrease in young gastrocnemius, but not consistently across muscle or age. No human BAC or impairment was tested.
Can Blood-Lymphocyte CB2 or DNMT mRNA Prove Recent Cannabis Impairment? A Placebo-Controlled Smoking Study
A 23-person smoking study found CB2 lymphocyte mRNA group differences but no validated gene-expression test for THC timing or individual driving impairment.
Can a Negative Urine THC Screen Conceal Surfactant Interference? What a 45-Specimen Study Found
A 2026 primary study found surfactant-related false-negative urine THC-COOH screens. See the 15/15/15 blinded evidence, control limits, and forensic implications.
Can Alpha-Pinene Prevent THC-Related Memory Impairment? A Six-Condition Human Trial
A six-condition human trial found no significant memory protection from alpha-pinene added to THC. Examine the 19-person data and forensic limits.
Does a Positive Maternal Urine THC Result Prove THC Is Present in Breast Milk One Week After Delivery? A 13-Woman Study
A 13-woman postpartum study found urine THC-COOH quantifiable in 7/8 at one week while breast milk THC was below quantification in 8/8. Forensic limits explained.
Can a Urine Cannabinoid Screen Predict Cannabis Withdrawal Severity? What 78 Inpatients Showed
In 78 inpatients, urine cannabinoid immunoassay readings modestly tracked cannabis withdrawal, but creatinine-adjusted results were not significant overall.
Did Cannabis Legalization Accelerate THC-Positive Crash Trauma? What 11,491 Screened Patients Actually Show
In 11,491 screened crash-injury patients, THC-only urine positives rose—but the modeled 2016 trend shift was nonsignificant and THC-only did not predict greater adjusted injury severity.
Can Swallowing a Hemp Cosmetic Produce a Reactive Urine THC Screen When Skin Application Does Not?
An 18-person crossover found 7 reactive urine THC strips after swallowing a CBD-rich hemp cosmetic and none after topical use. No urine confirmation was performed.
Can QuEChERS GC–MS/MS Measure THC in Whole Blood Without Proving DUI? A 30-Case Validation
A 30-case study validated THC and metabolite testing in whole blood by QuEChERS GC–MS/MS. What the limits, recovery and driver specimens can—and cannot—prove.
Can CYP2C9 or CYP2C19 Genotyping Explain THC Blood Results After CBD-Rich Cannabis? A 27-Person Study
A 27-person primary study of CYP2C9/CYP2C19 and whole-blood THC after CBD-rich cannabis: null results, small repeat-use signals and forensic limits.
Does Blood THC Predict Lane Weaving the Morning After Cannabis? A 130-Driver Simulator Study
A 130-driver primary study found no significant corrected simulator lane differences or THC-driving correlations 12–15 hours after smoking. See the limits.
Can Gastric Bypass Raise Early Venous Blood Alcohol Without Changing Its Later Elimination Rate? A 24-Woman Study
Original venous whole-blood study: bypass group had higher 10-minute ethanol and earlier peaks, but comparable later elimination. Evidence and forensic limits.
Did Starting Medical Cannabis Change Simulator Driving? A 44-Person Feasibility Study
A 44-person medical cannabis driving-simulator study found no significant group-by-time change across six outcomes; 18 completed both tests. Why urine positives do not establish impairment.
Can a THC Driving Simulator Miss Road-Test Lane Weaving at 10 mg? A 24-Driver Crossover Study
Controlled n=24 crossover: oral THC 10 mg increased real-road SDLP (p=.02) but not simulator SDLP (p=.36); 20 mg affected both. Why this is not a proven diagnostic false negative.
Can Hemp Oil on Hair Produce Cannabinoid Results Without Proving Cannabis Use? A Nine-Person Analysis
A 9-person hemp-oil hair study found cannabinoids after topical use. See what THC, CBD, CBN and metabolites do—and do not—prove in litigation.
Does Feeling Less Drunk Mean Better Vigilance After Alcohol? A 93-Adult Genotype Study
In a 93-adult controlled ethanol study, drinking-history scores predicted lower feelings of intoxication but not better vigilance. Breath, PVT and model limits explained.
Can a Contactless Car Breath Sensor Reliably Estimate Blood Alcohol? What 70 Volunteers Actually Showed
A 70-person DADSS sensor study found a strong breath–blood alcohol correlation. Learn what 9,163 paired readings cannot prove about individual BAC or driving.