When trying to pass a drug test many people will use a detox product like a detox drink or some detox pills. The directions for these products always encourage the user to drink some water with the products so as to make the three or four urinations possible if they are subject to a urine test. Most of the time the people are trying to pass a urine drug test and not have the THC detected from marijuana use.
When you smoke marijuana your body processes it and then the resulting THC metabolites are then stored in your body’s fat cells. Your fat cells are not water soluble so drinking a lot of water will not “flush out” the THC and help you pass your test. Drinking excessive amounts of water will have the opposite effect and can cause you to fail your drug test due to having a diluted sample. Sometime a diluted sample will not be a failed result but rather cause you to have to return and take another drug test.
Drinking to much water will lower your creatinine level in your urine and that is one of the parameters measured during your urine drug test. Excessive water intake will also alter the specific gravity of the urine and also cause a diluted sample.
Creatinine is naturally found in red meat and sometime vegetarians and vegans have a low creatinine level to begin with so by drinking a lot of water their levels are lowered even more and may jeopardize favorable test results even with the consumption of detox products. Synthetic urine already has the proper balance of creatinine, pH and specific gravity so this may be a viable option to someone who already has low creatinine levels.
It is always advisable to conduct a home test before submitting your sample and along with using a THC detection home test you may want to use an adulteration home test as well to determine if your sample will turn up diluted on your official test.