BBkingpin said:Also research the use Rx and Visine in your pocket with the knowledge of how to use it. Also, make sure they cant test for Visine -- which they would then determine to be a false negative.
I would not recommend diluting your test with anything as the urinalysis tests have what is known as a CTRL test where they are looking for masking agents. If they think you put something in there it could cause more problems than its worth.