depression
"False-positive urine immunoassay screening tests for amphetamines have been reported in patients taking bupropion (the active ingredient contained in Wellbutrin SR).
This happened to me with the birth of our second child.  Our daughter tested positive for amphetamines.  Child Services were called and we had to prove our own innocents!  The nurse reporting the "problem"  told us that they knew that Wellbutrin SR could cause this result but according to the law we were still reported.  "