Drinking several of them of course can cause urine to be diluted. Discussed here are twelve things that can make a person fail a drug test. Everything You Need To Know About Drug Tests Harbor Wellness Center Pass Your Drug Test Drinks Some people pay 50 for these drinks that claim to clean urine. . Drinking tonic water can lead to a false-positive for opiates and according to a study published in the Addictive Behaviors journal drinking even a few gin and tonics the night before can be enough to cause you to fail a Urine test the next day. A quantitative value of greater than 5000 aka off the chart. Food and drinks are not the only culprits for a failed drug test. It is true there is a possibility that the urine of a person who consumed Red Bull or another energy drink can falsely test positive on an immunoassay drug. I think the energy part comes from alot of the caffeine and the psycological feeling one gets when they lo