San Marcos DWI Breath & Blood Test Refusal Lawyer

The moment a San Marcos police officer asks you to blow into a breathalyzer or submit to a blood draw, you are standing at one of the most consequential decision points in a DWI investigation. Whether you complied, refused, or were not given a clear choice, what happened at that moment will shape nearly every aspect of your case going forward. A San Marcos DWI breath and blood test refusal lawyer who understands Texas implied consent law, the mechanics of how the state builds chemical test cases, and the specific practices of Hays County prosecutors can make a genuine difference in how this plays out.

Texas law treats chemical test refusal as an automatic civil offense separate from the DWI charge itself. A refusal triggers an Administrative License Revocation, and you have a narrow window to request a hearing to contest it. That clock starts running from the date of your arrest, not from when you hire a lawyer or when you appear in court. Many people who refused a test believe they were protected from prosecution because there is no breath or blood result. That is not how the law works. Texas prosecutors regularly win DWI convictions without chemical test evidence, relying instead on officer observations, dashcam and bodycam footage, field sobriety tests, and witness statements. Understanding the full picture of what you are facing, and what can actually be challenged, requires an honest assessment of your specific case.

On the other side, if you submitted to a breath or blood test and the result showed a blood alcohol concentration at or above the legal limit, that result is not automatically conclusive. Breathalyzer calibration, operator certification, blood sample handling, lab protocol, and chain of custody are all legitimate areas of scrutiny that can affect whether that number holds up in court. The Law Offices of David C. Hardaway represents people throughout San Marcos, Hays County, and Central Texas who are dealing with the full range of chemical test scenarios in DWI cases.

What Refusal Actually Does to a DWI Case in Hays County

Refusing a breath or blood test in Texas does not make the DWI charge disappear. What it does is remove one category of evidence from the prosecution’s file while simultaneously creating a separate administrative license consequence. The arresting officer will typically confiscate your driver’s license on the spot and issue a temporary driving permit valid for a limited period. From that date, the clock runs on your right to request an Administrative License Revocation hearing before the Texas Department of Public Safety. Requesting that hearing is not optional if you want any chance of keeping your license. Missing the deadline effectively forecloses that avenue.

At the ALR hearing, which takes place before a state administrative law judge, the question is narrower than at trial. The state needs to show that the officer had reasonable suspicion to stop you, probable cause to arrest you, and that you refused a lawful request for a specimen. If the stop itself was questionable, if the officer’s procedures were not followed correctly, or if there are problems with how the refusal was documented, the ALR hearing can be a real opportunity to challenge the suspension. It also provides something strategically valuable: sworn testimony from the arresting officer, locked in before the criminal case goes to trial.

DWI without chemical test evidence in Texas still carries serious penalties. A first offense is a Class B misdemeanor. Second and subsequent offenses escalate in classification and carry enhanced consequences including longer license suspensions, mandatory ignition interlock device requirements, and surcharge obligations. If there were aggravating circumstances at the time of the stop, such as a passenger under fourteen, a collision, or a prior DWI on record, the charge may be enhanced to a felony level regardless of whether a chemical test was taken. A DWI defense attorney serving San Marcos needs to analyze both the criminal case and the administrative license proceeding as related but distinct problems requiring coordinated strategy.

Chemical Test Issues That Matter in San Marcos DWI Cases

• Implied Consent Warning Requirements: Texas officers are required to read a statutory warning before requesting a chemical specimen. If this warning was not given, or was given improperly, the legal consequences of a refusal and the admissibility of a test result can both be affected.
• Breath Test Machine Reliability: The Intoxilyzer instruments used in Texas have documented calibration and maintenance requirements. Records showing equipment malfunction, improper maintenance intervals, or operator errors during administration can form the basis for challenging a breath test result.
• Mandatory Blood Draw Situations: Texas law permits officers to seek a warrant for a blood draw when a person refuses. In Hays County and surrounding jurisdictions, warrant-based blood draws have become more common. A blood draw obtained under a defective or overbroad warrant may be suppressible.
• Blood Sample Chain of Custody: From the moment blood is drawn to when the lab result is printed, multiple handling steps must be documented. Breaks in chain of custody, improper storage temperatures, contamination, or fermentation of the sample can all create grounds to challenge the reported BAC.
• Field Sobriety Test Validity: When no chemical test result exists, prosecutors lean heavily on standardized field sobriety tests. The conditions under which those tests were administered, the officer’s training, lighting, road surface, and whether the suspect had any physical conditions affecting performance, are all legitimate areas of scrutiny.
• Rising Blood Alcohol Defense: Because the body absorbs alcohol over time, a person’s BAC at the time of driving may have been below the legal limit even if a test administered later showed a higher number. This defense is most relevant when time elapsed between the stop and the chemical test.
• No-Refusal Weekends in Hays County: Law enforcement in the San Marcos area regularly designates no-refusal periods around major holidays and Texas State University events. During these periods, officers have on-call judges available to approve blood draw warrants quickly. Knowing whether your arrest occurred during one of these periods matters to how your refusal or compliance is analyzed.

What to Do After a DWI Arrest Involving a Breath or Blood Test Issue

The days immediately following a DWI arrest are not a time to wait and see how things unfold. The administrative clock on your license is already running, and the criminal case will proceed on its own timeline whether or not you are actively engaged in your defense. The most urgent step is contacting a DWI attorney in San Marcos who can request the ALR hearing on your behalf before the deadline passes. Missing that window forfeits your right to contest the license suspension administratively.

While you are waiting to consult with a lawyer, write down everything you remember about the stop. The reason the officer gave for pulling you over, the sequence of events, what you were asked, what you said, whether you were read a warning, and how the test request was made. Memory fades quickly and the details matter. If you submitted to a blood test, ask your attorney to obtain the DPS lab records, which document the handling and analysis of your sample. If you refused, obtain a copy of the peace officer’s sworn report, which forms the basis for the ALR proceeding.

On the criminal side, your case will be filed in Hays County. Misdemeanor DWI cases are handled in the Hays County Courts at Law, while felony-level DWI charges go to a Hays County District Court. Both operate out of the Hays County Courthouse in San Marcos. The DA’s office in Hays County prosecutes these cases aggressively, particularly cases involving high BAC results, accidents, or repeat offenses. Getting ahead of the case, understanding the evidence the prosecution has, and identifying problems with that evidence before the first court date is the approach that consistently produces the best outcomes.

Do not discuss the facts of your arrest on social media, with anyone other than your attorney, or with law enforcement without counsel present. Statements made to friends or family have a way of becoming relevant later. Your right to remain silent applies at every stage, not just during the initial stop.

Why The Law Offices of David C. Hardaway Handles These Cases Differently

Clients who have worked with The Law Offices of David C. Hardaway consistently describe the same experience: direct answers, consistent availability, and a legal team that treats their case with genuine care rather than as one file among hundreds. Client reviews reflect that David Hardaway communicates clearly throughout the process, returns calls, and engages personally with the facts of each case. In DWI cases involving chemical test disputes, that level of attention to detail matters. The difference between a suppressed blood test result and one that goes to the jury can come down to a gap in a maintenance log or a procedural misstep in how the warrant was drafted.

The firm’s approach to DWI defense is built on the same core principles that run through its broader criminal defense practice: direct communication with clients, personal investment in the outcome, and defense strategies shaped by the specific facts of each case rather than a one-size approach. That means looking hard at the stop that initiated the encounter, the officer’s conduct during the investigation, the reliability of any chemical test results, and the strength of the prosecution’s case without chemical evidence. Clients are kept informed at every stage and given straight assessments of where things stand. For someone navigating a DWI refusal case in Hays County, that combination of thoroughness and transparency is what allows for genuinely strategic decision-making.

Questions About DWI Breath and Blood Test Refusal in Texas

What happens to my driver’s license if I refused a breath test in San Marcos?

A refusal triggers an Administrative License Revocation through the Texas Department of Public Safety. You have a limited number of days from the date of arrest to request a hearing to contest the suspension. If you do not request a hearing within that window, the suspension takes effect automatically. The length of the suspension depends on whether you have prior DWI-related offenses or prior ALR suspensions on your record.

Can I still be convicted of DWI in Texas if there is no breath or blood test result?

Yes. Texas prosecutors regularly obtain DWI convictions without chemical test evidence. Officer testimony about driving behavior, physical signs of intoxication, field sobriety test performance, and video footage from dashcams and bodycams all serve as evidence. Refusing a test removes one piece of evidence but does not prevent prosecution.

What is the difference between the ALR hearing and the criminal DWI case?

They are separate proceedings. The Administrative License Revocation hearing is a civil administrative matter before a state administrative law judge, focused solely on whether your license should be suspended for the refusal or for a test result above the legal limit. The criminal DWI case proceeds in county or district court and determines whether you are convicted of a criminal offense. Both require attention, and the outcomes in one can affect strategy in the other.

Can police get my blood without my consent in Texas?

Yes, under certain circumstances. If you refuse a chemical test, an officer can apply for a warrant authorizing a blood draw. Texas also has mandatory blood draw statutes that apply in specific situations, such as cases involving accidents with injuries or fatalities, or suspects with prior DWI convictions. During no-refusal periods in the San Marcos area, on-call judges can approve warrants quickly, often within the hour.

What is a no-refusal period and how does it affect my case?

No-refusal periods are designated times, typically major holidays and high-traffic event weekends, when law enforcement has on-call judicial officers available to authorize blood draw warrants rapidly. If your arrest occurred during a no-refusal period in Hays County, a refusal likely resulted in a warrant-based blood draw. The fact that a warrant was obtained does not automatically mean the blood test result is bulletproof. The warrant itself, the draw procedure, and the lab analysis are all subject to scrutiny.

How long does a DWI case in Hays County typically take from arrest to resolution?

Misdemeanor DWI cases in Hays County can resolve anywhere from a few months to over a year depending on the complexity of the evidence, whether motions are filed, court scheduling, and whether the case goes to trial. Cases involving blood test results often take longer because the lab analysis itself can be contested through expert review and pretrial motions. Cases that raise suppression issues or go to jury trial run on longer timelines. Your attorney should give you a realistic picture of the expected timeline early in the representation.

If my blood was drawn but the result came back below 0.08, can I still be charged with DWI?

Yes. Texas law defines intoxication as not having the normal use of mental or physical faculties due to alcohol or a controlled substance, regardless of the numeric BAC reading. A person can be prosecuted for DWI even with a blood alcohol concentration below 0.08 if the evidence supports that their faculties were impaired. Drug-related DWI charges, including those involving prescription medications, fall under this standard as well.

Does a breath test refusal get mentioned to the jury at trial?

In Texas, the prosecution can inform the jury that a defendant refused a chemical test. This means a refusal is not without evidentiary consequence at trial. The jury is allowed to consider the refusal as part of the overall evidence, though it is not conclusive of guilt. Defense counsel can address the refusal in context, presenting reasons for it and challenging the weight the jury should give it.

What challenges can be raised against a blood draw done with a warrant?

The warrant process is not immune to legal challenge. If the affidavit supporting the warrant did not establish probable cause for the DWI arrest, or if the warrant was executed improperly, a motion to suppress the blood test result may succeed. Additionally, the actual blood draw must be performed by a qualified person in a sanitary environment, and the sample must be properly preserved and transported. Failures at any point in that chain can affect the admissibility of the result.

Can a DWI conviction in Texas affect a commercial driver’s license?

Yes, and the consequences for CDL holders are substantially more severe. Federal regulations impose a disqualification for a commercial driver’s license upon a first DWI conviction, and the threshold for intoxication while operating a commercial vehicle is a lower BAC than for standard drivers. A refusal of a chemical test while operating a commercial vehicle also carries enhanced disqualification consequences. CDL holders facing DWI charges in San Marcos should address the CDL implications as a priority alongside the criminal case.

Is it possible to get an occupational license while my regular license is suspended after a DWI refusal?

Texas provides a mechanism for an occupational driver’s license, sometimes called an essential needs license, that permits driving for employment, school, and essential household purposes during a suspension period. Obtaining one requires a court order and, in many cases, the installation of an ignition interlock device. The process and eligibility depend on the nature and history of the suspension.

Serving DWI Clients Across San Marcos and Central Texas

The Law Offices of David C. Hardaway represents clients facing DWI breath and blood test issues throughout the San Marcos metropolitan area, including the university district, the downtown corridor along Hopkins Street, and the residential communities north and south of the city center along the I-35 corridor. The firm serves clients in Kyle and Buda to the north, as well as those living in the communities east of the interstate including Martindale, Luling, and Lockhart in Caldwell County. South of San Marcos, the firm handles cases in New Braunfels, Seguin, Schertz, and Cibolo in Guadalupe and Comal Counties.

The firm’s reach extends further across Central Texas, with offices in Fredericksburg serving clients throughout the Hill Country and Gillespie County, and a Brenham office handling matters in Washington County and surrounding areas including the Highland Lakes communities. Clients from Austin and the surrounding Travis County area, from Bastrop and the communities along Highway 71, and from Williamson County communities including Round Rock and Georgetown also turn to the firm for DWI defense. Whether the arrest happened at a traffic stop on CM Allen Parkway in San Marcos, on the stretch of I-35 through Buda, or on Route 123 heading toward Seguin, the firm has the familiarity with local law enforcement practices, court procedures, and prosecutorial approaches to provide grounded, effective representation.

Talk to a San Marcos DWI Defense Attorney About Your Chemical Test Case

A DWI case involving a breath or blood test refusal, or a disputed chemical test result, involves overlapping legal proceedings with real deadlines and lasting consequences. The administrative case on your license and the criminal case in Hays County are both underway whether or not you are actively preparing a defense. Waiting costs options, particularly when the ALR hearing deadline passes without action.

The Law Offices of David C. Hardaway provides direct, substantive counsel to people navigating these cases across San Marcos and Central Texas. If you have questions about what a San Marcos DWI defense attorney can do for your specific situation, contact the firm to schedule a confidential consultation. You will get honest answers about where your case stands, what can realistically be challenged, and how the firm can help you approach the road ahead.