[xzins]

The Constitution is the Constitution. It says you have the right to be confronted by the witnesses against you.

That seems clear to me. If the US of A doesn’t like that part of the Constitution it is free to change it by amendment.

[incredulous in PA]

Quite frankly, I would like to see these tests moved out of the clinical setting entirely. Make it a legal test performed in a state crime lab. Then drunks could be kept out of the emergency rooms, med techs could concentrate on medicine, and the police could handle things on their end and get paid to testify in court. I might not trust the results as well, but innocent hospital employees wouldn't have to get stuck in the middle.