Knowledge Vault Blog

The Knowledge Vault Blog

Forensic Science. Criminal Defense Strategy. The Law Behind the Law.

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Welcome to the Knowledge Vault Blog — where the attorneys, scientists, and forensic experts at Deandra Grant Law share what we know. This is not a typical law firm blog. It is a research library built by practitioners who teach forensic science courses, grade certification exams, and testify as experts in courtrooms across Texas.

Our Managing Partner, Deandra Grant, holds a Master’s Degree in Pharmaceutical Science, teaches the ACS-CHAL Forensic Lawyer-Scientist courses at Axion Analytical Labs, serves on the faculty of the Borkenstein Drug Course at Indiana University, and chairs the DUI Defense Lawyers Association’s national Board Certification program. She is a member of the American Academy of Forensic Sciences, the American Chemical Society, the Society of Toxicology, and the International Association of Forensic Science Consultants. Partner Douglas Huff brings ACS-CHAL credentials and Garrett Discovery digital forensics training. Federal Defense Attorney James Lee Bright contributes decades of experience in federal criminal practice.

Inside the Knowledge Vault you will find:

Hot Takes – The latest on high profile trials, changes to the law, rulings by the Supreme Court and forensic science news.

Forensic Science & DWI Defense — Deep analyses of blood and breath testing science, GC-FID instrument calibration, partition ratio variability, in vitro fermentation, retrograde extrapolation, and the pharmacokinetics of drug impairment. Written by attorneys who don’t just challenge the science — they teach it.

Field Sobriety Test Analysis — The history, validation research, and scientific limitations of the NHTSA Standardized Field Sobriety Tests, written by a certified SFST Instructor who was the first attorney in Texas to pass the Forensic Sobriety Assessment Certification exam.

Federal Criminal Defense — Guides to federal conspiracy, sentencing guidelines, proffer sessions, grand jury investigations, asset forfeiture, and the critical differences between state and federal prosecution. Written by attorneys who practice in federal courts across Texas.

Digital Forensics & Electronic Evidence — How cell phone location data, social media records, body cameras, call detail records, and computer forensics affect criminal cases — and how to challenge them.

Sex Crime Defense — Outcry witnesses, SANE exams, DNA evidence challenges, false accusations, registry implications, and defense strategies for the most serious allegations.

Emerging Science & Policy — Roadside cannabis testing technology, marijuana rescheduling and federal sentencing, Canadian travel after DWI, and the evolving intersection of science, law, and public policy.

Texas Criminal Courts & Local Practice — County-by-county courts guides, DA office profiles, courthouse walkthroughs, and city-specific enforcement patterns across Dallas, Collin, Denton, Tarrant, Rockwall, and McLennan counties.

Every article in the Knowledge Vault is written or reviewed by the attorneys at Deandra Grant Law.

We don’t publish filler. We publish the analysis we wish existed when we were building our own expertise and the information our clients deserve to have access to before they walk into a courtroom.

If you are facing criminal charges or a DWI in Texas and want to speak with the attorneys behind this work, call (214) 225-7117 or visit our Schedule an Appointment page for a free, confidential consultation.

Knowledge Vault Blog
Firm News

Deandra Grant Named as One of Texas’ Top Rated Lawyers

Posted on by Deandra Grant
Attorney Grant Is Attorney at Law Magazine's New Local Legal Authority in DWI for Collin, Dallas, and Denton Counties

Over the years, Collin County DWI Attorney Deandra M. Grant, has received many accolades and much recognition for her dedication, commitment and continued success. In 2010 Attorney Grant was listed amongst D Magazine’s Best Women Lawyers in Dallas. The following year she was recognized as one of D Magazine’s Best Lawyers in Dallas, as well […]

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DWI Defense

Minnesota Supreme Court to Rule on Intox 5000EN Admissibility

Posted on by Deandra Grant
Deandra Grant

From today’s New York Times: A Lawyer in Minnesota Challenges the Accuracy of D.W.I. Breath Tests By TIMOTHY WILLIAMS Published: August 19, 2011 For nearly five years, the accuracy of drunken driven tests administered with a breath testing device used by Minnesota law enforcement agencies has been in question. About 4,000 people in 69 Minnesota counties have challenged the […]

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DWI Defense

Update on Ohio’s Breath Testing Battles

Posted on by Deandra Grant
Update on Ohio's Breath Testing Battles

Defense attorneys point out breath test flaws NEWARK — Would you trust a machine that is banned in other states for unreliability to test your blood-alcohol content? The state of Ohio does. In 2011, Licking County law enforcement agencies started using the Intoxilyzer 8000, a breath-alcohol testing machine manufactured by CMI Inc. in Owensburg, Ky., Newark Law […]

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