I would NEVER agree to take the alcohol test. I would let them take me to jail or whatever but I'd never blow in that tube.
Correct me if I am wrong but that is not an option. You either have to blow or take a blood test under supervised conditions. I believe our company regs require compliance in this area. A refusal for a drug/alcohol test is grounds for dismissal.
I believe it was a police officer who conducted the alcohol test and therefore it will be a binding test.