Category: Forensic Toxicology

Alcohol and the Workplace

This article explains Alcohol and the Workplace and the scientific, legal or practical evidence readers should understand.

Winning Fair and Square

This article explains Winning Fair and Square and the scientific, legal or practical evidence readers should understand.

Win Your Case with an Expert Witness

This article explains Win Your Case with an Expert Witness and the scientific, legal or practical evidence readers should understand.

The Advances in Forensic Toxicology

This article explains The Advances in Forensic Toxicology and the scientific, legal or practical evidence readers should understand.

Getting Down With Okorie

This article explains Getting Down With Okorie and the scientific, legal or practical evidence readers should understand.

Alcohol Testing 101

This article explains Alcohol Testing 101 and the scientific, legal or practical evidence readers should understand.

The Effect of Pathology on Toxicology

This article explains The Effect of Pathology on Toxicology and the scientific, legal or practical evidence readers should understand.

Picking the Perfect Counsel

This article explains Picking the Perfect Counsel and the scientific, legal or practical evidence readers should understand.

False-Positive Urine Drug Screens: Immunoassay Limits and Confirmation

Why urine immunoassay results are presumptive, why opioid coverage is assay-specific, and what records matter when reviewing an unexpected drug-screen result.

Future of Blood Testing Could Reveal Age

This article explains Future of Blood Testing Could Reveal Age and the scientific, legal or practical evidence readers should understand.

Cheating a Drug Test

This article explains Cheating a Drug Test and the scientific, legal or practical evidence readers should understand.

I Want to be a Forensic Toxicologist

This article explains I Want to be a Forensic Toxicologist and the scientific, legal or practical evidence readers should understand.

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Recent Blog Articles

Synthetic Sweat Recovery Does Not Prove Cannabis Collection Pads Are Interchangeable in People

Similar recovery of an added cannabis metabolite from collection materials does not establish that those materials perform interchangeably when sampling people. A 2023 study compared DrugWipe5A pads, cosmetic pads and cotton swabs using fortified synthetic sweat. Its results concern laboratory extraction and measurement, with an important gap before clinical or…

Read Article: Synthetic Sweat Recovery Does Not Prove Cannabis Collection Pads Are Interchangeable in People

A Cannabis Trial’s Smoking-Procedure Change Was Not a Randomized Safety Comparison

A cannabis driving trial reported fewer adverse events after switching from paced smoking to smoking to a desired effect. That observation does not establish the size of a causal safety benefit. The trial randomized cannabis-potency conditions; the smoking procedure changed during the study because the initial procedure was poorly tolerated….

Read Article: A Cannabis Trial’s Smoking-Procedure Change Was Not a Randomized Safety Comparison

THC Measured Per Forehead Sweat Pad Cannot Be Converted Into a Blood Concentration

A result expressed as nanograms of THC per sweat pad measures the amount recovered from that pad. It does not provide a blood concentration. A study involving drivers investigated in Italy illustrates why collection units, confirmation and participant selection must remain visible when interpreting forehead-sweat evidence. The collection sampled the…

Read Article: THC Measured Per Forehead Sweat Pad Cannot Be Converted Into a Blood Concentration