The short answer is:
Yes.
A person who operates a vehicle in Minnesota automatically consents to a chemical test of breath, blood, or urine for the purpose of determining the presence of alcohol or drugs.
Both the United States and Minnesota Supreme Courts have determined that an officer does NOT need a warrant to require a person to provide a breath sample, but DOES need a warrant to require a person to provide a blood or urine sample.
Before an officer can require a breath test or obtain a warrant for a blood or urine test, the police officer must have probable cause to believe that a person has been driving while impaired.
Officers typically build probable cause by doing the following:
Observing the impaired driving behavior,
Stopping to question the driver, and
Administering a standardized field sobriety test (SFST).
The penalty for refusing to take a sobriety test is 1 year in jail and/or a $3,000 fine and a license suspension in addition to the penalty you may receive if convicted of a DWI.