I never smoke pot, but I was at a party Saturday and took 4 hits. I dranks lots of beer. Wednesday I was informed of a random urine test at a lab. I drank 2 monster drinks, a glass of cranberry juice and over 3 quarts of water an hour before taking the test, I went to the restroom 3 times before going to take the test, I took a home urine test right after leaving the lab that came back negitive, Is there a possibility that I passed the test. (keeping 50/ng in mind). That never happens and I am just kicking myself.