The majority of OVI arrests involve failed breath tests, but more police
departments are using blood draws to try to prove their cases after a
Supreme Court ruling. The legal limits are essentially the same as breath
volumes but instead of measuring deep lung alcohol levels the forensic
toxicologist is measuring the amount of alcohol in the person's system.
Just like breath testing, blood testing has two legal limits. If you test
over the first legal limit of 0.08 but under 0.17, you face a mandatory
minimum of 3 days in jail. If you test over 0.17, you face a mandatory
minimum of 6 days in jail. Failing either test involves the loss of your
license for up to 3 full years.