Quote Originally Posted by Burnt Toast
False! Labs test for adulterants as well as the actual drug check. Adding eye drops will cause the sample to be labeled "adulterated".

Most employers treat an "adulterated" result as a refusal to test. This would mean that the employee would relinquish eligibility to participate in Employment Assistance Programs (normally offered to those who just merely tested positive for the first time), and be terminated.

Bad advice there, dude.
How do you know this is bad advice? Do you work in a lab?

Labs do test for adulterants, especially common ones like soap, bleach, etc. The active ingredient in Visine eye drops (Tetrahydrozoline HCl) is NOT routinely tested for. A GAO survey of 4 testing labs showed 4 of 4 DID NOT DETECT a sample spiked with Tetrahydrozoline HCl.

Don't believe me, than check it out for yourself: http://www.gao.gov/new.items/d06416.pdf

Spiking the sample is a last ditch method if you are testing positive and have no alternative. Substition and simply not smoking are better methods.