... different urine drug screens from three diff drs, two different locales , ALL show false negatives for benzos /klonapin? And vicoprofen ? Klonapin 1 mg tid x over 10 years, and vicoprofen 7.5/200 q 4 Hrs x 2 yrs didn't show on urine screen ? I really need help with this. I've tried to self educate, but futile... next appt with doc #3 is in Dec. And if I can't come up with an answer , and I get another neg, he will discharge me as a PT. Of his... just like doc #1 did!!PLEASE??