June 5, 2026 | Breath Tests
If you’ve been arrested for OVI in Ohio recently, there’s a good chance your breath test was administered using a newer machine known as the Intoximeter DMT. Law enforcement agencies across the state have increasingly adopted this device, making it one of the most common breath-testing instruments used in Ohio OVI investigations.
While a breath test result can play a significant role in an OVI case, the number printed on a test report does not automatically determine the outcome. Like any other form of evidence, breath test results must meet specific legal and procedural requirements before they can be used in court.
At Suhre & Associates DUI and Criminal Defense Lawyers, we closely monitor developments involving Ohio’s breath-testing technology, including the growing use of the Intoximeter DMT.
What Is the Intoximeter DMT?
The Intoximeter DMT is a breath-testing device approved for use in Ohio. It measures alcohol concentration in a person’s breath using infrared technology and reports the result as a breath alcohol concentration.
The Ohio Department of Health has approved the DMT for evidential testing, meaning prosecutors may rely on its results in OVI cases when testing procedures comply with Ohio law.
Many police departments have transitioned to the DMT in recent years, replacing older testing equipment. As more agencies adopt the technology, Ohio courts are seeing an increasing number of cases involving DMT-generated breath test results.
Why the DMT Matters in OVI Cases
Ohio has both impairment-based and per se OVI laws.
Under Ohio law, prosecutors may attempt to prove that:
- A driver was impaired by alcohol or drugs
- A driver tested at or above the legal alcohol limit
- Both theories apply
For per se OVI charges, the breath test result often becomes a key piece of evidence. Because of this, questions about how the test was administered and whether proper procedures were followed can become important issues in a criminal case.
A Breath Test Result Is Not Automatically Accurate
Many people assume that a breath test result is infallible. In reality, every testing device depends on proper operation, maintenance, and administration.
Several factors may affect the reliability of a breath test, including:
- Whether the officer followed the required testing procedures
- Whether the observation period was completed correctly
- Whether the machine was properly maintained
- Whether the operator held the required certifications
- Whether outside factors affected the test sample
These issues do not arise in every case, but they can become important when evaluating the strength of the evidence.
The Importance of the 20-Minute Observation Period
Before administering a breath test, Ohio procedures generally require the subject to be observed for a period of time to help ensure the test sample is not affected by outside contamination.
The observation period is designed to identify issues such as:
- Burping or belching
- Regurgitation
- Recent consumption of food or beverages
- Other events that could affect the breath sample
When disputes arise regarding a DMT result, attorneys often review whether the observation requirements were properly followed.
Medical Conditions May Affect Breath Testing
Certain medical conditions have long been the subject of discussion in breath-testing cases.
Examples may include:
- Acid reflux
- GERD
- Diabetes
- Certain metabolic conditions
Depending on the circumstances, these conditions may become relevant when evaluating how a breath sample was collected and whether the reported result accurately reflects a person’s condition.
Why DMT Records Can Be Important
The breath test result itself is only part of the story.
In many OVI cases, attorneys review records related to:
- Machine certifications
- Maintenance history
- Operator qualifications
- Calibration information
- Testing procedures
These records may help determine whether the breath test complied with Ohio requirements and whether additional questions should be raised regarding the evidence.
New Technology Often Leads to New Legal Challenges
Whenever law enforcement agencies adopt new technology, courts eventually address questions regarding how that technology is used and interpreted.
Because the Intoximeter DMT remains relatively new compared to some older breath-testing devices, attorneys across Ohio may continue to examine:
- Testing procedures
- Maintenance requirements
- Recordkeeping practices
- Scientific assumptions used by the device
As more DMT-related cases move through Ohio courts, legal challenges and judicial decisions will continue to shape how the technology is used in OVI prosecutions.
Contact the Dayton OVI Lawyers at Suhre & Associates DUI and Criminal Defense Lawyers for a Free Consultation Today
The growing use of the Intoximeter DMT has changed the landscape of OVI enforcement throughout Ohio. Although breath test results can be significant evidence, they do not automatically resolve every issue in a criminal case.
At Suhre & Associates DUI and Criminal Defense Lawyers, we are committed to staying informed on emerging developments involving Ohio OVI enforcement and breath-testing technology.
If you have been arrested for OVI and submitted to a DMT breath test, speaking with a Dayton OVI attorney may help you better understand the evidence, your rights, and the legal options available in your case. Contact us today to schedule a free consultation to get started.
Suhre & Associates DUI and Criminal Defense Lawyers – Dayton
130 West Second Street #17-129,
Dayton, OH 45402
(937) 531-0435