How long is lorazepam detectable in urinethe active ingredient Lorazepam, it is . Q: How long are drugs detectable in a urine drug test? A: All times are approximations only:. I have a drug test coming up and I dont have a script for the pain medication I take. . . Learn Detection Times and Cut Off Levels: How long the drugs will be detectable . All of these factor help determine "how long" the drug is detectable in your system when your urine is . Coming off long-term lorazepam may be more re... more