155 lbs 5'9" Athletic Thursday night was on the way to the airport, my buddy was burning a bowl and asked if I wanted a hit so I accepted one single puff. I abstain from puffing more than one hit for now do to my probation of random UA's. The last time I had a single hit was about a month ago. Last UA was almost a year ago. Anyways as my great luck would have it I was pulled over and the cop said the car "smelled funny"? Low and behold my probation officer calls me the next day for a UA. I was on vacation so he had to wait untill today to get the UA. Today is Thursday so it's been one week. My knowledge tells me I am clean but just to make sure I drank about 2 1/2 32OZ gaterades and a glass of tea this morning. Pissed about six times before my test. I took about 10 times the daily recommended dose of B12 to get some yellow urine but it was faint yellow when I gave my test. He said it was clear, although passed their test strip bottle test. He sent it in with "also test specific gravity" on the lab form. So what will the lab be looking for? Are the just testing just specific gravity or are they testing below 50 nanograms? Although I'm pretty sure there I am clean is there any consiquences for less than 50 nanograms? Thanks for any info you might have, remember this is a federal probation.