Forensic Toxicology Blog

Evidence-based articles about toxicology, expert testimony, legal developments, alcohol, drugs, and forensic testing.

8th Dec
gunshot residue

The Reliability Of Gunshot Residue

This article explains The Reliability Of Gunshot Residue and the scientific, legal or practical evidence readers should understand.

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24th Nov
hair drug tests

Does Bleaching Hair Affect a Hair Follicle Drug Test?

Short answer: Yes. Bleaching can affect what a hair drug test—often called a “hair follicle test”—measures. Bleach, permanent dye, relaxers, and other chemical treatments can change drug concentrations in hair. The effect varies by drug, treatment, hair condition, and laboratory method. Cosmetic treatment does not reliably make a person “pass”…

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17th Nov
toxicology testing

How Real Is Toxicology Testing On TV

This article explains How Real Is Toxicology Testing On TV and the scientific, legal or practical evidence readers should understand.

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10th Nov
types of drug tests

Types Of Drug Tests In The 21st Century

This article explains Types Of Drug Tests In The 21st Century and the scientific, legal or practical evidence readers should understand.

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27th Oct
urine testing

Drug Toxicology: Alcohol vs Drug related DUI

This article explains Drug Toxicology: Alcohol vs Drug related DUI and the scientific, legal or practical evidence readers should understand.

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20th Oct
expert witness qualifications

Expert Witness Qualifications Process

This article explains Expert Witness Qualifications Process and the scientific, legal or practical evidence readers should understand.

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6th Oct
history of forensic toxicology

A Short History of Forensic Toxicology

This article explains A Short History of Forensic Toxicology and the scientific, legal or practical evidence readers should understand.

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22nd Sep
forensic toxicologist

Drug Toxicology: Impairment & Driving

This article explains Drug Toxicology: Impairment & Driving and the scientific, legal or practical evidence readers should understand.

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8th Sep
drug testing sweat patches

Drug Testing: Sweat Patches 101

This article explains Drug Testing: Sweat Patches 101 and the scientific, legal or practical evidence readers should understand.

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25th Aug
narcopouch test

NarcoPouch Test False Positive Dilemma

This article explains NarcoPouch Test False Positive Dilemma and the scientific, legal or practical evidence readers should understand.

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18th Aug
Toxicology Lawyer

Toxicology Lawyer Talks Drug Testing in The Workplace

This article explains Toxicology Lawyer Talks Drug Testing in The Workplace and the scientific, legal or practical evidence readers should understand.

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11th Aug
forensic attorney

Forensic Attorney in A Virtual World

This article explains Forensic Attorney in A Virtual World and the scientific, legal or practical evidence readers should understand.

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Recent Blog Articles

Judge Robert S. Draper’s Verified Answer in CJP Inquiry No. 212

Primary-source document: Judge Robert S. Draper’s verified answer to the California Commission on Judicial Performance’s Notice of Formal Proceedings in Inquiry No. 212. The answer was filed on February 4, 2026. In it, Judge Draper denies violating the judicial canons cited by the Commission, disputes the Commission’s characterization of several…

Read Article: Judge Robert S. Draper’s Verified Answer in CJP Inquiry No. 212

Age, Balance, and Field-Sobriety Evidence: What Population Research Can Show

Age-related balance research helps frame evidence review, but population averages do not diagnose impairment or establish why one person swayed.

Read Article: Age, Balance, and Field-Sobriety Evidence: What Population Research Can Show

Kratom Cardiac Arrest and the Limits of a Mitragynine Blood Level

A 500 µg/L mitragynine result in a survived cardiac arrest illustrates why concentration, treatment, specimen timing, and alternative causes matter.

Read Article: Kratom Cardiac Arrest and the Limits of a Mitragynine Blood Level