hey man ive passed a few drug tests in the last year. As long as they dnt send someone to watch u piss its easy,u gotta be sneaky tho!.get a specimin jar frm chemist get 1 of ya mates to piss in it,that dnt smoke. when ur at the medical put it under ur arm,this hides it and keeps it warm coz no one pisses cold.they ll give u ajar to piss in ,simply go to the toilet and pour ur mates piss in and hide ur jar! IT WORKED 4 ME MAN goodluck!!