Reply #5: A blood test would be more effective [View All]

[JonLP24]

I don't know of any sure fire way to beat piss test but based on the fact that you can means that it would be less effective than a blood test which I think would be really hard to cheat. On edit-It is not that uncommon to get a false positive on a urine test. Other than that it depends on how long a drug (depending on light or heavy use) stays in your system. I don't remember the chart by chart but some forms of testing can detect a substance longer than another form. IIRC hair testing can detect alcohol for life if you ever used.

Either way, you're much more likely to catch cannabis users because THC is fat soluble rather than water soluble like salt-like substances.