There are a lot of ways to pass a drug test, a few work better than the others. I've had to take a test on short notice after I applied for a position one time and, being a heavy user of cannabis, this of course freaked me out. After reading I found that pee tests can pick up on marijuana for up to four to six weeks|a month to a month and a half}. I assumed I was bound to fail before I researched ways to help pass the test, which I'll share with you. A few of these literally clean your system of THC, while the others 'fool' the test into indicating that there is no Cannabis in your body...
1) Drink plenty of water
Drinking plenty of water prior to the test flushes out your system very fast, although temporarily. You notice when you drink plenty of water that your pee looks clear, meaning it's mostly clear of toxins from your body, especially the Cannabis you smoked. This is sometimes a really effective method, although occasionally the test giver can determine that you have drank a great deal of water in a hurry and they'll think you're aiming to trick the test, in which case they're going to request you to come again on a later date or perhaps give you an automatic fail. If you wish to consider a less risky technique, you could try...
2) Fake pee
There are some companies that provide fake pee which is really close in chemical composition to actual human pee. You tie it against your body, ideally the pelvic area, a couple of hours just before the test so that the pee can warm up to your body temp (evaluators that notice that a pee sample is too cold to have come from your own body definitely will automatically fail you). This is a good and simple method to pass a test, yet it is not going to work if the tester is actually looking at you deliver the sample (which many places do)...they will definitely find out you are using fake pee immediately. Additionally, the bag can show an apparent bulge that may give you away to a tester, or perhaps even accidentaly bust open prior to taking the exam. For a more surefire way, consider the next technique...
3) Detox kit
You can find kits available for purchase which can cleanse Cannabis out of your body rapidly. They consist of pills or sometimes a drink which you ingest which flushes out toxins from your body so that your test results appear clean. There's no need to worry about consuming liters of water or walking around with a pouch of pee strapped to you, simply take whats inside the kit and you're done. This is actually the method I used and it cleansed my system within a matter of days and I passed the test. There are a few kits that work in as soon as one day and ones that will require up to a week to fully cleanse your system, so they are good for people who are surprised with a test in 1 day as well as for people who know days ahead of time when they will be testing. Personally, I used the Stinger 5X 7 Day Permanent Detox and it provided me great results. It's a beverage that all you have to do is drink and it detoxifies your system without having bad side effects. It even came with drug tests I could take at home so I could make sure I was clean well before I went to take the real test. If you wish to learn more about it or use it yourself I will provide you the website link below.
Hopefully these pointers help you to pass your test. I myself think the tests are unfair simply because cannabis is a fairly safe drug, but some people do not agree and unfortunately we need to pass these tests to get a job. Good luck to you!
Stinger 5X 7 Day Permanent Detox Kit: