Minnesota law requires you to take a blood, breath, or urine test if you are arrested for a DWI. Minnesota's implied consent law says that if you are lawfully arrested by an officer who has probable cause to believe that you have been driving or boating while intoxicated, then you consent to taking a chemical test of your blood, breath, or urine for the purpose of determining your blood alcohol content (BAC). See article.

You also consent to these chemical tests – even if you have not been arrested – if you are involved in an accident where there is property damage, a serious injury, or death. The test must be taken within two hours of when you were last driving or boating. The officer gets to choose which test you take and may require you to take an additional test if he or she believes you have been taking drugs, too.

When officer requests a test, he or she has to tell you that Minnesota law requires you to take it and that refusing it is a crime. This is known as the "Implied Consent Advisory."