Breath-Test Vulnerabilities
A drunk-driving defendant, usually through an experienced attorney and often with the help of a scientific expert, may be able to challenge the breath-test results in his or her case. Several different factors may call into question the reliability of the results. Depending on the law of the state in which the DUI charges were filed, evidence of a problem with the test result could make the BAC reading inadmissible in court or, if the BAC is still admissible, could cast serious doubt on whether the reading is reliable.
Arguments a DUI defense attorney may make to undermine the breath-test results:
- The breath tests’ assumption of a 2100-to-1 blood-to-breath ratio may not be scientifically reliable.
- The test was not administered correctly; for example, the administrator did not warm up the machine to the correct operating temperature or ensure an adequately deep lung sample.
- The test administrator was not properly trained or qualified.
- The equipment was not maintained properly, calibrated correctly or cleaned adequately.
- The result was affected by some characteristic of the driver, such as age; lung function; overall strength and size; a disease or condition such as asthma, diabetes, eardrum rupture, ketosis, emphysema, bronchitis, dental issues, fever or harelip; shock or trauma; certain types of special diets; or hiccupping, burping, vomiting or hyperventilating. Even severe heartburn could have made the breath results unreliable.
- The test administrator did not continuously observe the driver for an adequate period before the test to prevent him or her from putting anything into his or her mouth that could affect the result. For example, a product used in the driver’s mouth, such as mouthwash or adhesive, or lip ointment could have affected the test result.
- Police radio operation generated electromagnetic waves, causing radio frequency interference (RFI) with the testing equipment.
- The driver was exposed to a gas or vapor before the test that made it unreliable, such as during painting, floor sanding, varnishing or other activity with chemical exposure. Similarly, an outside environmental cause in the surrounding air could have caused a high breath test result.
This long list of potential problems with breath test results is not close to complete. If a person charged with drunk driving is able to show that something affected the reliability of his or her test results, the state will need to rely more on other types of evidence to prove intoxication. Other types of evidence on which the state may need to rely include witness, officer and driver statements; witness and police observations; or field-sobriety test results.
History and Science of the Breath Test
The Breathalyzer® was invented in 1954 to collect evidence of intoxication by measuring BAC through breath analysis. Since that time, several manufacturers have entered into the breath-analyzer market and the science behind the machine has evolved. The word “breathalyzer” is now widely used to refer to these apparatus regardless of manufacturer. Other terms used to refer to these devices include evidential breath tester (EBT), breath analyzer, breath-analysis product, breath-alcohol analyzer and breath-testing device or machine. In addition to Breathalyzer, common brands include Intoxilyzer® and Intoximeter®.
In very basic terms, the breath-test machine is designed to measure the amount of alcohol in a deep-lung breath sample and to use that amount to determine BAC. The four main scientific methods used in the various machines are chemical analysis, infrared spectrophotometry, gas chromatography and fuel-cell detection.
-
Committed to the Community
-
Helping People First
-
Offering Payment Plans
Set up an initial consultation with our office today. Discuss your case with our Colorado Springs Lawyers at
(719) 212-2448 or complete our contact form.
Reliability of BAC & Breath-Test Results in a Drunk-Driving Case
In every state in the US, a driver with a blood-alcohol concentration (BAC) of .08 or higher is presumed to be legally intoxicated for drunk-driving purposes. Each state has also enacted an implied-consent law. Implied-consent laws provide that every licensed driver within the state is considered to have given his or her consent to chemical testing to determine his or her BAC whenever a law enforcement officer has reasonable suspicion of intoxication. In most states, refusal to submit to such a test results in license suspension or revocation.
While a blood test is arguably more reliable, the breath test for BAC is more commonly used in the field because the testing equipment is convenient to transport and because the test is easier to administer, can be used by non-medical personnel, is less physically intrusive to the person taking the test and produces results faster. However, under certain circumstances, breath tests can be less than reliable as an accurate measure of BAC.
It is in the best interest of a drunk-driving defendant to retain an DUI attorney such as one from The Gasper Law Group in Colorado Springs, Colorado, who is thoroughly familiar with possible breath-test weaknesses.
Contact a DUI Lawyer in Colorado Springs
If your situation involves a breath test to measure BAC, an experienced attorney such as one from The Gasper Law Group in Colorado Springs, Colorado, who is thoroughly familiar with proper testing procedure and the science behind the test may be able to provide valuable assistance.
Contact the Gasper Law Group today for a free consultation
-
"The professionalism, guidance, and candor I’ve received from each person in this law firm has been beyond reproach."
I’m not one to have an extensive experience with law firms or lawyers and court in general. However, the professionalism, guidance, and candor I’ve received from each person in this law firm have been beyond reproach. Anytime, I mean, anytime, I’ve had a question about my case and the way forward, I was met with a friendly and constructive conversation about my case. There was never a doubt in my mind, that I made the right choice when I selected this law firm to represent me. Caryn and Stacie have been a wonderful blessing to my life and my legal proceedings. If you are looking for a no-BS law firm that has a significant reputation in the Springs area, I absolutely recommend this one. Even though I hope to not have to deal with this again, fingers crossed and every lucky charm, I’d trust this law firm with my representation to handle the hard stuff and give me ease with court proceedings. Thank you all for what you do and have done for me, my family, and my career. Bless you all.
- Steve S. -
"I was absolutely floored with the knowledge and expertise that not only Caryn carries, but the firm as a whole."I, unfortunately, was involved with two separate situations within a few years of each other, which left me in quite a bind both times. I was lucky enough to have Caryn assist me in both cases and was absolutely floored with the knowledge and expertise that not only she carries, but the firm as a whole. One of the best, if not the best lawyers I've ever come across. Extremely nice and very honest. I was able to resolve my situations with minimal impact and continue my life without fear of being held back.- Former Client
-
"I highly recommend you use them to make your life easier. I couldn’t ask for a better team!"I used the Gasper Law Group when I was going through my divorce and child custody case. I got the outcome I wanted, Carrie Kelly and Kimberly Lucas made my life 10x easier considering i didn’t know what I was doing. They were patient, and caring and even made me laugh a few times. I highly recommend you use them to make your life easier. I couldn’t ask for a better team! I’m now happily divorced and got my kiddo 50/50! You guys rock and if anything comes up in the future, I’ll be sure to use you guys! Thanks so much gasper law group for the fast and professional services!- Micheala E.
-
"If you need any Legal advice or assistance reach out to the Gasper Law Group. 5 star service."Gasper Law Group is great to work with. I recently did Estate Planning and they were awesome. Explained everything thoroughly. Emily, Jack, Therese , Holly, and Emily are all very professional. If you need any Legal advice or assistance reach out to the Gasper Law Group. 5 star service.- Ruby D.
-
"Attentive and supportive"The Gasper Law Group was fantastic. They treated me well and were very open about my situation. The team was attentive and made sure I fully understood everything, supporting me all the way. I would recommend them to anyone for any situation.- Jason E.
-
"A courteous, respectful, and efficient group"Highly professional team of attorneys and paralegal staff who work hard to reach the best outcomes for their clients. A courteous, respectful, and efficient group in all phases and aspects of due diligence, and discovery with effective preparation of cases entrusted to them. I recommend them highly and without reservation in all areas of the law in which they are eminently qualified.- Salah H.
-
"They took care of my case in a very timely manner and made it feel like my traffic ticket was their number one and only priority."Caryn Adams, Stacey Sadler and the rest of the team at the Gasper law group are an amazing, courteous, compassionate, and very helpful group of talented individuals. I was in a bind and during my consultation I explained my situation and they went above and beyond my expectations. They took care of my case in a very timely manner and made it feel like my traffic ticket was their number one and only priority. I have never been treated with such respect and compassion. I definitely recommend talking to them about any of your legal needs.- Scott R.
-
"Don’t have much hope? Leave it to Caryn she will change that."I dug myself a deep hole and didn’t have much hope or luck with the attorney I used before. I called Gasper law group and Caryn Adams was my attorney that took charge of everything. I couldn’t have asked for anything better the outcome she made possible is everything I wanted. She is great at her job and takes cases seriously … don’t have much hope leave it to Caryn she will change that. Thanks Gasper law group you’re the best!- Mike L.