Florida has an implied consent law, meaning if you're lawfully arrested by an officer who has probable cause to believe you've been driving under the influence, then you consent to taking a chemical test of your blood, breath, or urine. Refusing to take a breathalyzer or any chemical test during a DUI stop will result in an immediate license suspension for one year for the first refusal. A second or subsequent refusal increases the suspension to 18 months and is also considered a misdemeanor offense.