Knowledge Vault Blog

The Knowledge Vault Blog

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

View Blog Posts

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

Texas Implied Consent Law: What It Means, What It Requires, and Where It Can Be Challenged

Texas Implied Consent Law

Texas Transportation Code §724.011 provides that any person who operates a motor vehicle in a public place in Texas is deemed to have consented to providing a specimen of breath or blood if lawfully arrested for a DWI offense. This is the implied consent law. Understanding what it actually requires and where its application can […]

Attorney Grant Is Attorney at Law Magazine’s New Local Legal Authority in DWI for Collin, Dallas, and Denton Counties

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

We are pleased to announce that Attorney Deandra M. Grant is Attorney at Law Magazine’s new Local Legal Authority in DWI for Collin, Dallas, and Denton Counties. The platform provides Attorney Grant an opportunity to share her breadth and depth of knowledge about driving while intoxicated matters with other attorneys and potential clients. Attorney at Law Magazine is a print and online […]

Can You Own a Gun After a DWI Conviction in Texas?

Can You Own a Gun After a DWI Conviction in Texas?

The answer depends on whether the DWI was a misdemeanor or a felony and, critically, on whether you are asking about Texas law or federal law. The two frameworks are different, they operate independently, and a person who regains gun rights under Texas law may remain prohibited under federal law. Understanding both is essential before […]

I Took a Prescription Drug. Can I Be Charged with a DWI?

I Took a Prescription Drug. Can I Be Charged with a DWI?

You started a new medication your doctor prescribed. You took the recommended dose before driving. A while later, flashing lights appear in your rearview mirror, and the officer tells you that you are being investigated for driving while intoxicated. You didn’t have a single drink. Can this actually result in a criminal charge? Yes, and […]

How Serious Is a Public Intoxication Charge in Texas?

How Serious Is a Public Intoxication Charge in Texas?

Public intoxication is one of the most common criminal charges in Texas. Most people who receive one assume the fine is the end of the story so pay it, move on, forget it. That assumption is wrong, and it can have consequences that last far longer than the night that produced the charge. Understanding what […]

Getting a DWI Sucks: What Happens When I’m Arrested for DWI

Getting a DWI Sucks What Happens When I’m Arrested for DWI

Getting a DWI sucks. Period. There’s really no better way to describe an arrest for DWI in Texas. It’s expensive, it’s embarrassing, it can result in you losing your job because you didn’t report to work the next day because…well, you were in jail and couldn’t make it. With the help of a good DWI […]

Consequences of a Protective Order in Texas

Consequences of a Protective Order in Texas

When I was a prosecutor, one of my responsibilities was filing protective orders for victims of domestic abuse whose cases were sent to our office. I was surprised by how many men simply agreed to have a protective order enforced against them without even going through a hearing in front of the judge. I remember […]