no, that's false.Added: (in the US) the question is a TRUE statement. However you will suffer the consequences of your state's motor vehiicle operators licensing laws which in most instances provides...
Yes, in most countries you will have to do the test. If you refuse, the officer is usually empowered to arrest and take you to a police station for a blood test.
(in the US) If you licensed in an implied consent state, no, you may not. In the case of a severe or deadly accident resulting in death, you may even be compelled to give a blood sample