Take creatine two days before your test, drink at least 48oz of water each day before on the day of the test drink a 16oz water and a small cup of creatine 3 and half hours before your urine test. No thc will be present in your urine, because its stored in your fat and thc is not water saluable so it will blocked by creatine a few days later you would fail because your fat will break down thc into metabolites. Hope this helps don't drink bleach, don't use water pills, or niacin flushes!!! Trust creatine that's what strip and other detoxs are just with extra metabolism blockers.