sorry if i am being stubborn..but i am to lazy to cite..i have read things from wikipedia to medical research paper saying online saying 3-7 days for single...in special case 30 days for slow metabolism. 30 days is also the minimum number for chronic users.
Again, this is all nothing but guesswork. Id bet the farm that none of the many variables had been taken into account. For any research/experiment to have any validity, you can only change one variable. Multiple variables are useless from a validity standpoint.

If I have to pass a U/A in order to get/keep a job, I would much rather rely on regular home testing than a bunch of info from an online encyclopedia in which any Tom, Dick, or Harry can modify or edit at will.
Burnt Toast Reviewed by Burnt Toast on . 4 day till test, single use opinion-21 days till urine drug test alright some may say i am being paranoid, and i agree..but this drug test has the fate of my life as it is for a well paying job situation...smoked weed for the first, time took two hits from a bong of Candy or Candy kush. i didn't even feel like i was hi, i was really upbeat probably do to alcohol not weed. so i smoked 17 days ago... i took a drug test for thc through a agency and it was administered by labcorp, on day 13th from smoking pot.. the urine sample gave was from 1 and half Rating: 5