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

How Gun Crime Evidence Gets Suppressed in Texas: The Fourth Amendment, Article 38.23, and the Search That Built the Case Against You

How Gun Crime Evidence Gets Suppressed in Texas The Fourth Amendment, Article 38.23, and the Search That Built the Case Against You

By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist The vast majority of gun crime cases in Texas begin the same way: law enforcement finds a firearm during a search. The search might happen during a traffic stop, at a residence, in a vehicle, or on the defendant’s person. The officer writes in the […]

Defenses to Assault Charges in Fort Worth: What Texas Law Actually Allows

Defenses to Assault Charges in Fort Worth: What Texas Law Actually Allows

By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist If you have been arrested for assault in Fort Worth or anywhere in Tarrant County, the first thing you need to understand is that an arrest is not a conviction. Texas law provides a range of statutory defenses that, when properly raised and supported by […]

White-Collar Crime Sentencing in Texas: State Court, Federal Court, and Why the Difference Matters

White-Collar Crime Sentencing in Texas: State Court Federal Court and Why the Difference Matters

By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist If you or someone you know has been charged with a white-collar crime in Texas (ex. fraud, embezzlement, money laundering, bribery, theft by a public servant, or a related offense) the first question that determines almost everything about your case is one most people never […]

Drug Possession Charges in Texas: The Penalty Groups, the Quantity Thresholds, and the Defenses That Actually Work

Drug Possession Charges in Texas: The Penalty Groups the Quantity Thresholds and the Defenses That Actually Work

By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist Drug possession is the most commonly charged drug offense in Texas. The penalties range from a Class B misdemeanor (up to 180 days in jail) to a first-degree felony with a mandatory minimum of 10 years in prison and what determines where your case falls […]

Attorney Deandra Grant Featured in Dallas Modern Luxury’s Power Players

Attorney Deandra Grant Featured in Dallas Modern Luxury's Power Players

Deandra Grant, the Managing Partner at Deandra Grant Law – Criminal & DWI Defense, has been featured in Dallas Modern Luxury’s 2023 list of Power Players. This feature story highlights her success as an attorney and her life outside of the office. The profile delves into how she first came to love the legal profession, the […]

How Likely is Your Model of Car to be Stopped for a DWI Investigation?

How Likely is Your Model of Car to be Stopped for a DWI Investigation

Are some car models statistically more likely to be stopped for a DWI investigation that others? According to insurance statistics, the following car models had the most DWI’s in 2022 (in order): Acura NSX Chevrolet Astro Audi A4 allroad Nissan NV GMC Suburban Cadillac Seville Chevrolet Caprice Audi A5 Toyota Landcruiser Buick Lucerne It’s important […]

Is Jail Time Possible for a DWI in Texas?

Is Jail Time Mandatory for a DWI in Texas? Penalties Probation and What Actually Happens

Yes, a Texas DWI conviction carries a mandatory minimum period of confinement at every offense level. Even a first-offense DWI, if it results in a conviction, requires at least 72 hours in jail. The question for most defendants is not whether jail time is technically possible. It is what the actual exposure looks like, when […]

Douglas Huff’s DWI Article in Attorney at Law Magazine

Attorney Huff Featured in Voice for the Defense

Douglas Huff, a partner at Deandra Grant Law – Criminal & DWI Defense, recently published the article “Texas DWI Superfines” in Attorney at Law Magazine. In it, he discusses the impact of the state’s decision to remove the DWI Surcharge in 2019, due to the repeal of the Texas Driver Responsibility Program. This surcharge used […]

Can You Get a Texas DWI in a Self-Driving Car?

Can You Get a Texas DWI in a Self-Driving Car

By Deandra Grant | Deandra Grant Law | Dallas, Texas The short answer is yes and for most vehicles currently on Texas roads marketed as “self-driving,” the legal analysis is straightforward. What makes the question more interesting is understanding exactly why, what Texas law says about automated vehicles, and where the defense questions actually arise […]

Attorney Deandra M. Grant Selected to 2021 Texas Super Lawyers List

Attorney Deandra M. Grant Selected to 2021 Texas Super Lawyers List

We are thrilled to announce that Attorney Deandra M. Grant was selected to the 2021 Texas Super Lawyers list. This is her eighth year in a row being included in the list and her tenth time receiving the award. She was also a Texas Super Lawyers honoree in 2011 – 2012 and 2014 – 2020. Being chosen […]