If you are pulled over on suspicion of DUI in Virginia, the officer will most probably ask you to submit to a Breathalyzer test. Such a test is meant to measure your blood alcohol content (BAC) to show whether you are beyond the state’s legal limit of 0.08 percent. Refusing to submit to a Breathalyzer test at the scene may keep the state from finding evidence against you, but there is a high probability that you may be arrested for doing so.