I know it is far past when this was posted. But you can get past drug tests, especially urine. There are legitimate products that will work. Considering almost ALL drug tests are 5 panel tests (Marijuana,cocaine,PCP,Opiates (Heroin, oxycodone, vicodin, etc.), and almost always amphetamines, but some check JUST for methamphetamine, the synthetic urine will work on the vast majority of tests.
I suggest that you, or anyone that has a drug test in the future that is at all concerned (even just a litte) to find out more about the test they will have to take. The sheet you receive to take the third party has which test you are to take on it.
Well I hope you got the job! And although this is far past the post, hopefully you/anyone can find this helpful.