Quote Originally Posted by submarine
you won't fail. unless they are giving you a very high tech test. there are basically two types of test.

1. the type of test parents give to their teenage kids at home. these tests are pretty cheap and found at the drug store. they can detect THC within the last id say, 5-7 days. if you drink a lot of water and make sure you pee a lot before this type of test you should be fine.

2. then there are the type of tests that real certified doctors due. these tests are pretty crazy and measure a number of different levels of things in your pee. you can't really get around these unless you have a kit (some doctors will sit and watch you take your piss) if you get one of these tests you might be screwed they can detect THC anywhere from 27-31 days.
Where in the blue hell did you get these numbers or any of this information. It's really bad bad advice. Some of it is wrong, some of it is inaccurate, some of it is incomplete. Please refrain from giving advice about drug testing unless it is complete and accurate.

Drug testing can be as simple as an instant test or a lab based test. Lab based tests use immunoassay followed by GC/MS on all non-negative samples. Guess what, instant testing also uses immunoassay and is quite accurate and can detect much longer than 5-7 days. If his urine levels are above 50 ng/ml on immunoassay or 15 ng/ml on GC/MS, he is in danger of failing. I could get further into immunoassay and GC/MS but I have written about it so many times an advanced search will help you find more information.

Now let me give Mark Twain some specific advice to his case that is accurate. Most people who are clean and then get high once can pass a test in about 5 days. That's a "one-time high." He's also on probation so he may be observed. I don't know if this is probation from the courts or from the school. Court probation is almost always observed or they have the right to observe and I'm willing to bet that if this is from the school when you agreed to go on probation and be tested you agreed to observation. So subbing is probably not an option. You will have 6 days so either go out and buy an instant test and test yourself in the morning with the first void. If it is positive or you can't get to the test, then I recommend a mild dilution. Follow the dilution sticky but use 1/2 to 3/4 the fluid it recommends.