Not exactly. Dilution will occur naturally in people if they actually have drank a bunch of water. What if they have a shy bladder and must drink a few glasses to go? Regardless as to why they diluted their sample a diluted sample does NOT mean a failed test. It is a do over. The lab has no results either way and thus cannot say pass or fail so they will let you do it over. If it happens again, yes, they will get suspicous. Trust me. And even though this is the case using some creatine a few days earlier and some vitamin B the hour before will fool their tests for dilution even. You will have diluted your sample, but with these extra steps they won't know. Dilution is the way to go. You know all those papers you sign before you take a drug test. Read them sometime. I assure you, a diluted sample is not means for termination (when applying for a job). If you're on parol dilution will throw a red flag, but they too give second chances. The worst that can happen is you have a few more days to get clean. A diluted drug test is NOT a failed test as they have failed to find any traces of anything, much less enouph of something to incriminate you. You know you do drugs. They don't. Thats your advantage.