Quote Originally Posted by ben31295
Also burnt toast, since your familiar with the new age drug tests, I had a friend that told me he would stick a small bottle of' visine in one of those lighter leashes and attach the clip to the inside of a jacket sleeve with a safety pin and he claims he would pull the lighter leash through his jacket sleeve and have the visine in his hand with the lid off, and he said he had it between s palm and his penis where the supervisers can't see, and he said he would squirt as much as he could in the cup and it would dilute the urine and give a false negative for all drugs, and then he would open his hand and the lighyter leash with the visine would retract back into his sleeve unseen, does that seem legitamit? If it works and gets past the lab then that could be a neat and easy trick for us innocent pot users :-)
Since visine is essentially salt water with trace amounts of vasoconstrictors, I suppose it is possible that it could be used to dilute the urine unnoticed. However this would be very dangerous.
It is unknown to me whether the ingredients in artificial tears could cause interference in the assay tests. Even if we were sure that would not be the case, one would have to be very careful to not dilute your urine too much. As said before, the primary methods used to validate a urine specimen are creatinine levels, specific gravity, and pH. luckily artificial tears are pretty pH neutral so that's not much of a worry. What I'd be afraid of is diluting too much and causing the creatinine levels to go too low.
Seems like a possible last resort, but by no means would be my first choice, in my opinion.

Luckily, if the urine passes the assay tests and validity tests, GC/MS is not required.