In Missouri if you refuse you lose your license for a year. If the Cop wants an alcohol blood test he needs a warrant.
Personal story: when I was a prosecutor I got a call in the middle of the night. Trooper had arrested a guy in a hit and run that was drunk on his ass. Refuse to blow. I come down to the jail and politely ask the guy to blow so we can avoid the hassle of a warrant. He tells me to fuch off. I prepare and have the on call judge sign a warrant to have blood drawn. I specifically wrote it up to draw arterial blood which is quite painful to have done.
