Drinking water doesnt help with any drug test. It may also over dilute the urine and make the drug test invalid. Marijuana is not detected in the urine for over a week. Weboctober 13, 2017 paige bell. Did you take cocaine and are now worried about being able to pass a drug test? We’re here to help you understand how cocaine works as well as. Webi used a dispo thc pen last night and i have a drug test next week and need to pass to get the job. I workout 5 times a day and sweat a lot. What do i do to pass Webi haven’t smoked since january 24th and i have a drug test coming up this last week of february. Gonna follow what you guys did and hope for the best. Webhello, as the title says i have a drug test next week for a job and it will be a urine test.