Breathalyzer/blood test options

Breath test when done on the intoximeter or any other machine nowadays can not be way off. The old days, yes I will agree 25-30 years ago. The new machines internally check and calibrate themselves and have all kinds of checks. In over 13 years I have never seen one that is off. When you see the psycophysical impairment that indicates the amount of impairment that you see with the intoximeter result. The portable preliminary breath test machines, yes can be off if there is mouth residual alcohol. However this is why you usually wait 20 minutes to give it. By the time a intoximater is run, it is usually 1 hr later anyway by the time you get from roadside to the station/barrack/troop. Besides some State's will not offer blood test to you.