Knowledge Vault

Forensic Science

Deep analysis of blood and breath testing, GC-FID calibration, partition-ratio variability, in vitro fermentation, retrograde extrapolation, and the pharmacokinetics of impairment — by attorneys who don’t just challenge the science, they teach it.

Articles

Forensic Science

Can Police Take Your DNA Off a Fork?

Annie Dookhan and the Lab That Failed for Nine Years

How Reliable Is Blood Spatter Analysis?

Can DNA Results be Hacked?

When the Drug Dog Alerts

Is a Fingerprint Match Really “a Match”?

Facial Recognition: When the Algorithm Is Wrong

AI in the Forensic Lab

A Virus as a Witness: The Schmidt Case & Novel Science

A Century of Forensic Rulings Now Searchable

Reading Age from a Bloodstain: DNA Methylation “Clocks” and the Next Admissibility Fight in Texas

Bite-Mark Evidence Sent a Man to Death Row. It Was Never Science.

That “Ballistics Match” on TV Isn’t as Certain as You Think

Fingerprints From Fired Bullets: The Next Forensic Frontier

Solving a Cold Case with Analysis of 45 Year-Old Hair

Texas CLR Connect: A New Statewide Forensic Discovery Portal, and What It Will (and Won’t) Change

Arson Convictions, Cameron Todd Willingham, and Texas’s Junk Science Writ

Probabilistic DNA Software in the Courtroom: What Defense Lawyers Need to Watch For

The Missy Woods Case and Texas DNA Challenges

Can the Algorithm Convict You? TrueAllele and a Defendant’s Right to Cross-Examine the Code

What Is a Forensic Laboratory Audit & What Does It Reveal

The Difference Between Screening Tests and Confirmatory Tests in Drug Cases

How to Challenge a Forensic Expert Witness in Texas

The 2009 NAS Report and Forensic Science Reliability

Bite Marks, Hair Analysis, and the Science Courts Are Still Admitting

Genetic Genealogy and the Fourth Amendment

THC Redistribution: Your Drug Test Came Back Positive for THC But You Haven’t Used Cannabis in Weeks

The Rising Blood Alcohol Defense in Texas: Why the Number on the Test May Not Be the Number That Matters

L-Methamphetamine vs. D-Methamphetamine: The Science of a Drug Test That Could Convict an Innocent Person

What Is Partition Ratio Variability — And Why a 0.08 Result May Not Mean What the Prosecution Claims

Can Mouth Alcohol Contaminate a Breath Test in Texas?

What Is In Vitro Fermentation — And Can It Produce a False BAC Result?

The Intoxilyzer 9000: How Texas’s Breath Testing Instrument Works, What It Misses, and How to Challenge It

The Tolerance Problem: Blood Drug Levels vs Impairment

Understanding the GC-FID: How the Instrument That Decides DWI Blood Test Cases Actually Works

Retrograde Extrapolation in Texas DWI

Roadside Cannabis Testing in 2026: The Science, the Devices, and What’s Actually Ready for the Courtroom

The Standardized Field Sobriety Tests: A Critical History of the Science Behind the Roadside Exercises That Decide Your Freedom

Auto-Brewery Syndrome: When Your Body Brews Its Own Alcohol

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