Minn. Stat. § 169A.51
Subd. 1. Implied consent; conditions; election of test.
(b) The test may be required of a person when an officer has probable cause to believe the person was driving, operating, or in physical control of a motor vehicle in violation of section 169A.20 (driving while impaired), and one of the following conditions exist:
Subd. 2. Implied consent advisory.
At the time a test is requested, the person must be informed:
(1) that Minnesota law requires the person to take a test:
Subd. 3. Type of test.
The peace officer who requires a test pursuant to this section may direct whether the test is of blood, breath, or urine. Action may be taken against a person who refuses to take a blood test only if an alternative test was offered and action may be taken against a person who refuses to take a urine test only if an alternative test was offered.
Subd. 4. Requirement of urine or blood test.
Notwithstanding subdivision 3, a blood or urine test may be required even after a breath test has been administered if there is probable cause to believe that:
(2) a controlled substance listed in schedule I or II, other than marijuana or tetrahydrocannabinols, is present in the person's body.
Action may be taken against a person who refuses to take a blood test under this subdivision only if a urine test was offered and action may be taken against a person who refuses to take a urine test only if a blood test was offered.
Subd. 5. Breath test using approved breath-testing instrument.
Subd. 6. Consent of person incapable of refusal not withdrawn.
A person who is unconscious or who is otherwise in a condition rendering the person incapable of refusal is deemed not to have withdrawn the consent provided by subdivision 1 and the test may be given.
Subd. 7. Requirements for conducting tests; liability.
(c) The physician, medical technician, emergency medical technician-paramedic, medical technologist, medical laboratory technician, laboratory assistant, or registered nurse drawing blood at the request of a peace officer for the purpose of determining the concentration of alcohol, controlled substances, or hazardous substances is in no manner liable in any civil or criminal action except for negligence in drawing the blood. The person administering a breath test must be fully trained in the administration of breath tests pursuant to training given by the commissioner of public safety.
* NOTE: The amendment to subdivision 1 by Laws 2004, chapter *283, section 4, is effective August 1, 2005. Laws 2004, chapter *283, section 15.