Bob Barker today is estimated to have a net worth of $70 million.
In fact, Ativan can be detected in urine up to 6 weeks after it was last taken in a heavy user. But even small doses might be detectable in standard drug screens up to a week later. More here on Ativan detection and use, plus a section at the bottom for your questions about Ativan in your system.
Lorazepam can be detected in urine for 2 or 3 weeks (and up to 6 weeks if used regularly) but it is not anywhere close to 7 to 15 hours as stated in your comment. Generally if you have a urine screen 24 hours or less after a one-time dose of Lorazepam the metaboilite will not be detectable.