I bought and used one the day before my last piss test, my test came back negative, and sure enough when I took the test for the company it came back negative also, so from my experience they're pretty acurate.
halfbaked redneck Reviewed by halfbaked redneck on . Home Drug Tests Has anyone heard of Guardian Drugs of Abuse Rapid Test? I bought one from a head shop recently. I tested myself after 15 days (I had smoked about 6 joints 14-15 days before). I came up negative (I'm 5'11", 175 lbs.). I asked the lady that worked there how accurate it was and she said it was accurate, but said something to the effect of ...the actual tests that companies do may be more accurate, so I may want to buy the pills you can take to keep the metabolite levels down. I think from Rating: 5