What is a PBT Test? A preliminary breath test, or PBT, is a type of breathalyzer used by law enforcement to measure the alcohol concentration in a person’s breath. This chemical test is usually administered roadside and helps police officers determine if a driver is intoxicated.
This comprehensive guide will discuss everything you need to know about the preliminary breathalyzer test! We’ll cover topics like how the test works, what the results mean, and whether or not you should take one if an officer offers.
Talk to an experienced DUI attorney if you have questions about a PBT test.
Table of Contents
- What is a PBT test, and what does it measure?
- How is the PBT test administered, and what are the consequences of refusing to take it?
- What are some potential legal implications of a positive PBT test result in Michigan OWI cases?
- How can an experienced DUI lawyer help you fight a positive PBT test result in court?
- What should you do if you have been arrested for DUI in Michigan?
- Contact Experienced Michigan OWI Lawyers Today!

What is a PBT test, and what does it measure?
A PBT test is a preliminary breath test, a type of breathalyzer. Law enforcement officers use this test to measure the alcohol concentration in a person’s breath. The results of this test can help officers determine if a driver is intoxicated.
How does s a PBT test work?
A PBT test works by measuring the amount of alcohol in your breath. When you blow into the device, it will calculate the amount of alcohol in your breath and give you a reading.
What do the results of a PBT mean?
The results of a PBT can tell an officer if you have been drinking and how much alcohol is in your system. However, it’s important to remember that this test is not always accurate.
Should you take a PBT test if offered by an officer?
It’s up to you whether or not you want to take a PBT test if offered by an officer. If you refuse, you face a fine and possible license sanctions. However, if you take the test and fail, the officer will likely arrest you.
How is the PBT test administered, and what are the consequences of refusing to take it?
A law enforcement officer administers the PBT test. The officer will ask you to blow into a breathalyzer machine. If you refuse to take the test, you may be subject to penalties, such as a fine.
In most states, if you are pulled over on suspicion of DUI, the officer will ask you to take a preliminary breath test (PBT). This is also sometimes called a preliminary breathalyzer test (PBT). The PBT is a roadside test used to determine if an officer has probable cause to believe you are impaired.
Another means a police officer would use to show that you are impaired by administering a field sobriety test. A field sobriety test is a series of physical and mental exercises that an officer asks you to perform. The test is meant to show whether your coordination and ability to think are impaired.
If the officer believes you are impaired, you will be asked to submit a blood test. The blood test determines your blood alcohol content (BAC). If your BAC is above the legal limit, you will be charged with DUI.
PBTs are not perfect. They can produce false positives and false negatives. However, they are usually accurate enough to give officers probable cause to arrest someone for DUI.
Consequences of refusing to take a preliminary breath test
If you are ever asked to take a PBT, you should know your rights. You have the right to refuse to take the test. However, if you do refuse, you may be subject to penalties. Failure to take the PBT is a civil infraction. It is punishable by a fine of up to $200.00. You cannot get jail time for refusing to take a preliminary breath test PBT.

What are some potential legal implications of a positive PBT test result in Michigan OWI cases?
If you are pulled over and asked to take a preliminary breath test, also called a PBT, and you test positive, the officer will likely arrest you. A PBT is a roadside test used to determine if an officer has probable cause to believe you are impaired. Michigan has several legal implications for a positive PBT test result in OWI cases.
A Preliminary Breath Tests Can Be Used To Arrest You
One is that the test can be used as preliminary evidence to support a warrantless arrest. This means that if an officer has probable cause to believe that a driver is intoxicated, they can arrest the driver without obtaining a warrant.
Evidence of Probable Cause For an Arrest
Another implication is that, in some cases, a positive PBT result can be used as evidence of probable cause for an arrest in a criminal trial. This is most likely to occur when the PBT is given during a traffic stop, and the driver is then charged with operating while intoxicated.
In these cases, the prosecution will typically introduce the PBT results into evidence to show probable cause for an arrest on an OWI charge. Other evidence of intoxication, such as field sobriety tests or eyewitness testimony, would also be used.
Michigan Implied Consent Law Requires One to Submit to Chemical Testing
Finally, a positive PBT result can lead to an automatic driver’s license suspension in Michigan. This is because Michigan has an implied consent law, which requires all drivers to submit to chemical testing (including breath tests) if they are arrested for drunk driving. If a driver refuses to submit to testing or if they fail a breath test, their license will be automatically suspended for twelve months.
As you can see, there are several potential legal implications of a positive PBT test result in Michigan OWI cases. If you have been charged with drunk driving, you must speak with an experienced criminal defense attorney who can help you understand your rights and options under the law. Contact our office today to schedule a free consultation.

How can an experienced DUI lawyer help you fight a positive PBT test result in court?
An experienced DUI attorney can help fight a positive preliminary breath test. PBTs are not perfect and can produce false positive results. There are several ways to challenge the accuracy of the test, including:
- Questioning the calibration of the breathalyzer machine
- Showing that the police officer did not follow proper procedure when administering the test
- Arguing that outside factors (like cold weather) may have affected the results of the tests
If you have been charged with DUI based on a positive preliminary breath test, you must contact an experienced attorney who can help you fight the charges. Do not try to navigate the legal system alone – an experienced lawyer will know how to protect your rights best and give you the best chance at beating the charges against you.
Contact us today for a free consultation. We can help you fight your DUI charge and get your life back on track.
PBTs, or preliminary breath tests, are often used by police officers to determine if a driver is impaired. PBTs are not perfect and can sometimes produce false positive results.
If you have been charged with DUI based on a positive PBT, you must contact an experienced DUI attorney who can help you fight the charges. An experienced lawyer will know how to protect your rights best and give you the best chance at beating the charges against you.
Contact us today for a free consultation. We can help you get your life back on track.

What should you do if you have been arrested for DUI in Michigan?
It is essential to know your rights if you are arrested for a DUI in Michigan. One of the first things that will happen is you will be asked to take a preliminary breath test, also known as a PBT. This is an important test, and it is important to understand what it is and how it works.
The preliminary breath test, or PBT, is a handheld breathalyzer police officers use to determine if a driver is impaired. If the PBT indicates that a driver is impaired, the officer may arrest the driver and require them to take a more accurate breathalyzer test at the police station.
The PBT is not admissible in court but can be used as probable cause for an arrest. It is important to know that you have the right to refuse the PBT, but if you do so, the officer may arrest you anyway. If you are arrested, you must take a more accurate breathalyzer test at the police station.
Contact Experienced Michigan OWI Lawyers Today!
Suppose you have been arrested for DUI in Michigan. In that case, it is important to contact an experienced DUI attorney who can help you navigate the complex legal process. Bruce Law Firm can assist in your defense and fight for the best possible outcome in your case.
An experienced DUI attorney will know how to challenge the PBT and other evidence against you and will fight for the best possible outcome in your case. Contact us today for a free consultation. We are here to help.