DUI Tests: A Primer

If you are pulled over for a suspected DUI, the officer in question will administer a field sobriety test. However, this is just the beginning of the tests that could possibly be administered to you. Take the time to read on and discover just a few of the tests that could possibly be administered. Remember, if you are charged with a DUI, it is in your best interest to hire the services of an attorney with expertise in representing clients with DUI or DWI charges, such as the Law Offices of Daniel Aaronson.

Blood Test

A blood test is the most accurate way in which you can be analyzed for your blood alcohol level. A small sample of blood is drawn from you and then analyzed in the police lab. Although accurate, there can be problems in this method of testing. For example, if a sample has not been well preserved, this can lead to inaccuracies in the analysis. This is due to the fact that, over time, blood will begin to coagulate and change properties. There can also be mix ups in the blood work if the blood is not properly labeled and categorized.


A breathalyzer test is a test that an officer can administer straight "from the road." You simply have to blow into a device that will analyze the amount of alcohol that is present on your breath. This also includes the amount of alcohol that is present on your stomach. However, this test can be somewhat inaccurate. For example, mouthwashes, tooth medicines, and breath fresheners can all contain trace amounts of alcohol that will lead the breathalyzer to give out a positive reading. Before administering a breathalyzer test, an officer is supposed to keep close watch on you, in order to make sure you do not burp or regurgitate, or otherwise bring forth anything sitting on your stomach into your mouth that could affect the results of the test.

Urine Tests

Urine tests are significantly less accurate than the aforementioned test and tend to only be administered whenever the other two types of test are simply not a possibility. The reason why these tests are so inaccurate is due to the fact that the level of alcohol present in your urine has to be correlated or adjusted to the approximate amount in your blood stream. The problem is that there is no uniform way of correlation. A person with a high amount of alcohol in their urine doesn't mean that they necessarily have a high blood alcohol content.