What are my chances of passing a drug test?

[Burnt Toast]

If you test positive on a home test and need to spike the sample, eye drops work well, because labs don't test for that.

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.