What are some grounds for invalidating a refusal of a blood test?

Asked over 1 year ago - Boulder, CO

What are some procedural mistakes an officer can make that can invalidate a refusal to take a blood test in the state of Colorado?

Additional information

the person refusing was under 21. does that give them the right to contact a parent?

Attorney answers (4)

  1. Christopher Daniel Leroi

    Contributor Level 20


    Lawyers agree


    Answered . The person being under 21 does not entitle them to talk to a parent. You can not really invalidate a refusal. It is for a jury to decide as to whether you refused a chemical test or not. To be quite hones, most DUI attorneys recommend clients to refuse chemical tests because it gives the prosecution less proof to convict them. I have always had juries say that they absolutely wanted to have a breath or blood test in order to convict. So, look at the glass half full, you made it more difficult for the DA whether you refused or not.

    The information provided in this answer does not create an attorney-client relationship. If you are interested in... more
  2. John Lawrence Buckley

    Contributor Level 16


    Lawyers agree

    Answered . This is a REALLY complicated question that this format cannot do justice.

    However, I'll give you a couple of examples...

    If an officer provides a Miranda advisement BEFORE an Expressed Consent advisement, that MAY invalidate a 'refusal.'

    If an officer improperly explains the Expressed Consent law to you, that MAY invalidate a 'refusal.'

    You are better served by setting an appointment to discuss the details of your case with a DUI defense attorney. Many of us offer free consultations.

    Best of luck to you.

    John Buckley

    No answer here should be considered to form an attorney-client relationship. You should consult with a licensed... more
  3. James C Forslund

    Contributor Level 19


    Lawyer agrees

    Answered . Your question is unclear.

  4. Keith Douglas Vance


    Contributor Level 10


    Lawyer agrees

    Answered . Failure to mirandize, failure to provide good explanation of express consent, changing options (blood to breath because the hospital is too full, for example), other crazy circumstances that make it look like you didn't refuse. Regardless, no test = no proof of intoxication, other than officer observations, which are mostly subjective.

Related Topics


The definition, charges, and penalties for driving under the influence (DUI) vary by state and depend on a number of factors.

Blood test for DUI

A breathalyzer is a type of DUI test that involves blowing into a device to test your blood alcohol content.

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