DUI questions are complicated, and the law is different in different states. The police will have to prove you are impaired to some degree to convict you of DUI. The breath test would show a level of alcohol in your blood. Without the test, they will rely on your driving, your actions after being stopped, any admissions you made, and the results of the roadside tests they performed. You should consult a lawyer in your state who can review the police report and help you decide what to do.