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Challenging Saliva Testing in a DUI Case

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Getting pulled over and asked to take a saliva test can feel scary and confusing. Many drivers do not know that these tests are not always accurate, and they do not always hold up in court. This post explains what saliva testing is, why it can be challenged, and how a strong DWI defense can protect your future.

Facing DUI charges based on a saliva test? Do not wait. Call (979) 304-2160 or reach out through our online contact form today to talk about your rights.

What Is Saliva Testing In A DUI Stop

Saliva testing is a newer tool that police sometimes use during a traffic stop. Officers swab the inside of your cheek to check for drugs in your system. Unlike a breath test for alcohol, saliva tests are meant to detect substances like marijuana, cocaine, or other drugs.

These tests are handheld and give quick results right at the roadside. However, quick does not always mean correct. Many of these devices are still fairly new and have not been proven reliable in every situation.

Why Saliva Tests Are Often Unreliable

Saliva testing devices are far from perfect. Several factors can affect how accurate the results really are.

  • Cross-contamination from food, drinks, or mouthwash can throw off a reading.
  • Certain medications or common substances can trigger a false positive.
  • The device may not be properly calibrated or maintained by the officer.
  • Saliva tests often cannot tell the difference between recent drug use and drug use from days earlier.
  • Weather conditions like heat or cold can affect how the device performs.

Because of these issues, a positive saliva test does not automatically mean guilt. This is one of the biggest reasons why these results can and should be questioned.

Your Legal Rights During A DUI Stop

Every driver has rights, even during a stressful traffic stop. Knowing them ahead of time can help you protect yourself.

You have the right to stay quiet beyond giving basic information like your name. You also have the right to ask if you are free to go, and you have the right to speak with an attorney before answering detailed questions about the stop.

In Texas, refusing a saliva test may still lead to license consequences under implied consent laws. That said, refusing does not mean you are guilty, and an experienced Angleton criminal defense attorney can walk you through what refusal may mean for your specific case.

Common Ways To Challenge Saliva Test Results

There are several angles a defense team can explore when saliva testing is used as evidence.

  • Questioning whether the officer had a valid reason to pull you over in the first place.
  • Reviewing whether the saliva test device was properly maintained and calibrated.
  • Checking if the officer followed the correct steps when collecting and handling the sample.
  • Looking into whether the lab that processed the sample followed proper testing procedures.
  • Examining the chain of custody to make sure the sample was not mishandled or contaminated.

Each of these steps can reveal weaknesses in the state's case. A single mistake in testing or procedure can sometimes lead to reduced charges or even a dismissal.

The Importance of the Chain Of Custody

Chain of custody means tracking who touched the saliva sample and when, from collection to lab testing. If there are gaps or unexplained delays, the sample's reliability comes into question.

A break in this chain can raise real doubt about whether the sample was contaminated or switched. This is a key area that a defense attorney will dig into when reviewing your case.

How A Field Sobriety Test Fits Into The Picture

Officers often use field sobriety tests alongside saliva testing. These are physical tasks, like walking in a straight line or standing on one leg, meant to check balance and coordination.

These tests are subjective, meaning the officer's opinion plays a large role in the outcome. Nervousness, medical conditions, or even uneven pavement can cause someone to fail, even if they are not impaired.

Steps To Take If You Are Charged

If you are facing DUI charges tied to a saliva test, what you do next matters. Acting quickly can make a real difference in how your case unfolds.

Write down everything you remember about the stop as soon as possible, including what was said and done. Avoid discussing the details of your case with anyone other than your attorney, including on social media.

Reach out to a defense attorney as soon as you can so that evidence can be reviewed while it is still fresh. Waiting too long can mean losing access to important details like dash cam footage or witness memories.

Building A Strong DWI Defense

A solid defense looks at every piece of evidence, not just the saliva test result. This includes police reports, video footage, witness statements, and the specific device used during your stop.

Your attorney can request records on the saliva testing device to check its maintenance and accuracy history. They can also compare the officer's report against video footage to look for inconsistencies.

Why Local Knowledge Of Angleton Courts Matters

Every county handles DUI cases a little differently, and Brazoria County is no exception. Knowing the local court system, the prosecutors, and how judges tend to view these cases can shape defense strategy.

An attorney familiar with Angleton courts understands what arguments tend to work and which ones fall flat. This local insight can be a real advantage when building your defense.

Trusted DWI Defense And Angleton Criminal Defense Attorney Support

Facing a DUI charge because of a saliva test does not mean your case is already decided. There are real, proven ways to question the accuracy of these tests and protect your rights. Jeff Gilbert Law Office is here to walk you through your options and stand by you throughout the process.

If you or someone you love is facing DUI charges in Angleton, do not face it alone. Call (979) 304-2160 or reach out through our online contact form to schedule a consultation and start building your defense today.

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