Arizona carries some of the toughest DUI laws in the country. If an officer suspects that you may be driving under the influence, he may ask you to perform a test to determine your blood alcohol content, or BAC. Your BAC can be measured by breath, blood or a urine sample. A BAC level of .08% to .14% is a typical DUI, and a BAC level about .15% is considered an extreme DUI. You can refuse to take these tests, but one may be administered against your will if the officer obtains a warrant. Arizona has an implied consent law, meaning that anyone who is in possession of a valid Arizona driver's license has already given their consent to the state of Arizona, to perform a blood, breath or urine test if suspected of DUI.
A blood test is the most accurate way to test a person’s BAC, but the most common test is by breath, which will give a more approximate level. A breathalyzer measures the alcohol content in the deep lung region. The last resort to obtain a person’s BAC is a urine test, but this is normally only administered if the other two methods are ineffective.
