false positive urin

[loujack722]

caught a dirty urin today for opiets.im on a quinolone for pnamonia. could this cause a false positive.

[sandee1818]

The reactivity of 13 quinolones (levofloxacin, ofloxacin, pefloxacin, enoxacin, moxifloxacin, gatifloxacin, trovafloxacin, sparfloxacin, lomefloxacin, ciprofloxacin, clinafloxacin, norfloxacin, and nalidixic acid) was tested in 5 commercial opiate screening assays from September 1998 to March 1999. In 6 healthy volunteers, we confirmed the cross-reactivity of levofloxacin or ofloxacin with these opiate screening assays.

[loujack722]

thank you for your advice. allmy dr told me was that certin quinolones do give false positives. my med was biaxin xl 500mg.  but that was all he would tell me. he seemed to be really busy. now i need to find out if that is one of the 13 quinolones. if you can assist me further please do so. or advize me where to search.

                                                                     thanks .concerned                                                                                      

[Toomanyadvil]

Hi Loujack

     I think there have been some studies showing certain antibiotics can cause false positive urine screenings. Do a search and Ask your DR if they know if it is a possibility for a Urine tox screen to come up dirty if your taking certain anti-biotics.
I dont know who else you can go to besides your DR except a lab. They may know also.

I hope for your sake that it can happen

TMA.