I took 800 mg of kava kava on Thursday, and 400 mg on Friday. I also took 900 mg of valerian root on Thursday. However, I was offered a job on Friday, and I start on Monday. I need to know if these will show up as a false positive on my drug test, and if there's anything I can do to prevent that from happening. I've been chugging cranberry juice since yesterday, hoping that it will help. I don't have a definite date for my drug test, but I'm assuming it will be after my training on Monday. If someone could possibly tell me how long kava and valerian stays in your system also, that would be great. Thanks!