For refusing to take a blood alcohol test, a person can lose their CDL for at least: Do you currently have motorcycle insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question For refusing to take a blood alcohol test, a person can lose their CDL for at least: Answers One month. Three months. Six months. One year. Explanation Refusing to take a blood alcohol test when requested to do so by an officer will result in the loss of one's license for at least one year.