Any person who operates a motor vehicle within Missouri shall be deemed to have given consent to a chemical test or tests of the person’s breath, blood, saliva or urine for the purpose of determining the alcohol or drug content of the person’s blood in any of the following circumstances:
1. If the person is arrested for any offense arising out of acts which the arresting officer had reasonable grounds to believe were committed while the person was driving a motor vehicle while in an intoxicated or drugged condition; or
2. If the person, while operating a motor vehicle, has been involved in a motor vehicle collision which resulted in a fatality or a readily apparent serious physical injury, and has been arrested for the violation of any state law or county or municipal ordinance with the exception of equipment violations; or
3. If the person, while operating a motor vehicle, has been involved in a motor vehicle collision which resulted in a fatality
4. If the person is under 21 years old, has been stopped by a law enforcement officer (including at a roadblock or sobriety checkpoint), and the law enforcement officer has reasonable grounds to believe that such person was driving a motor vehicle with a blood alcohol content of .02% or more by weight.
Visit our Chemical Test Refusal Page for more information.