Quote Originally Posted by Burnt Toast
What is it about the E-screen thats worrying you in regards to subbing?

As long as the sample is indeed drug-free, it will pass any kind of U/A, including the E-screen.
Since its tested right on the spot, I'm concerned about hitting the right temp as opposed to just the 90-100 degree range on a temp strip? Is there a more specific range? Will there even be a temp strip on the cup? Going out now to try to find a small enough strip to fit on my shampoo bottle.