In Tennessee, you may if a police officer has reasonable grounds to believe that you are driving a motor vehicle under the influence. If they have reasonable grounds to believe that you are DUI, then they can ask you to submit a chemical test.
If you drive a motor vehicle in the State of Tennessee, you are giving your implied consent that if a law enforcement officer has reasonable grounds, the officer can ask you to submit to a chemical test.
There are two types of chemical tests; a breathalyzer and a blood draw. The officer gets to decide which test you take if you give permission to submit to a chemical test. If you have a phobia to needles, that is not going to be a defense to the fact that you said, “I don’t want to take a blood test, because they’re going to stick a needle in my arm.”If the officer picks a blood draw as your chemical test then that’s what you have to do. If you don’t do it, then the consequence is the same.
If you refuse to submit to a chemical test after the police officer asks you to take one and a court finds by the preponderance of the evidence that you were advised of your rights regarding implied consent then the court can revoke your driving privileges and take your driver’s license regardless of the outcome of the DUI.
Depending on your history, at a minimum, you would lose your driving privileges for one year for violating the implied consent law. This is true if you beat the DUI. Now, I’ve never seen that happen, but all they have to show is by preponderance of the evidence that you had to submit to a chemical test and you refused to knowingly and, therefore, you didn’t get the test. You could beat the DUI, but still lose your driving privileges, technically, for a year for failing to submit to that chemical test.
The answer is no, you don’t have to take one, but there’s a consequence if you do not.