Will drinking water and juice for 4 days straight give you a clean tox screeni?

Generally, YES< but it depends on what you are de-toxining from...this is a true attempt at detoxifying the body of exposed toxins, but it depends on what you are trying to avoid detection of. Cocaine & heroin will disipate in 125-150 hours after consumption regardless of doing a juice/water fast, (but you must abstain every day from usage!) Hello? One joint smoked let's say Wednesday, of mid-level weed, followed by 5 days of fasting with distilled H2O and other juices like diluted cranberry juice, PineApple Juice or other diretics like tea or coffee will help flush out the toxins of marijuana which would other wise stay up to 15 days per (1) mid -quality joint. Drinking too much water may also make the test inconclusive due to diluted creatanine, in the urine, a detection 'control' labs use to check for false negative/positives. Steam room/sauanas & exercise helps to swet out the toxins too.