It's possible. There's no way to know for sure without knowing allot of details such as how much marijuana you consumed, how often you consume it and what you mean exactly by "diluted".
Pray
No your test should be negative, as long as you haven't used any other drugs.
None!
well, THC (Tetrahydrocannibanal) the Euforic substance in marijuana aka. the stuff that causes the "high" takes up to 30 days to exit the users system, however it may vary depending on the amount smoked, there are many ways to speed up this process the most commonly used and less costly method is drinking water constantly and urinating freqeuntly untill about an hour before the urine test. the test will most likely come back "diluted" in some cases this is considered a "hot" UA or possitive for drugs. but it all depends on who is giving you the drug test. if it is court ordered such as for probation or what not then a diluted drug test is treated the same as if u were using meth, herroine, and cocaine. so in this case i think its more beneficial to just be like "yeah i smoked a bowl."
30 days
marijuana? yes.
drink a ton of water
Don't use pot.
How long has it been since you smoked before Wednesday?
If you are talking about marijuana, yes it is possible, but also very possible you will fail as well. Depends on how much you smoked, your height and weight, and your body's metabolism. Drink lots of water up until the day of the test. Don't drink too much before the test or it will be diluted and considered a positive test.
http://www.marijuanapassion.com/How-Long-Does-Marijuana-Stay-In-Your-System.html
To prevent a diluted urine sample during a drug test, avoid excessive fluid intake before the test, as this can lower the concentration of drug metabolites in your urine. Follow any instructions provided by the testing facility on when and how much to drink before the test.