I remember reading a legit scientific paper (from like 1993) that said that visine (1 part : 9 parts piss) effectively lowers the detectable amounts of THC metabolites in urine.
It is definitely undetectable (neutral pH, no change in color etc.) but drug tests have probably advanced since then. I've used it twice and passed, but I mostly used it as a precaution and I probably would have passed anyway.
Yeah I heard something similar but I thought it was just a myth. Might try that tomorrow; I have a test kit at home just need to buy some visine. It's worth a try
"Let them see that their words can cut you, and you'll never be free of the mockery. If they want to give you a name, take it, make it your own. Then they can't hurt you with it anymore." - Tyrion Lannister