PT - JOURNAL ARTICLE AU - Qaiser Shafiq AU - Anand Mutgi TI - Urine opiate screening: false-positive result with levofloxacin AID - 10.1503/cmaj.091508 DP - 2010 Oct 19 TA - Canadian Medical Association Journal PG - 1644--1645 VI - 182 IP - 15 4099 - http://www.cmaj.ca/content/182/15/1644.short 4100 - http://www.cmaj.ca/content/182/15/1644.full SO - CMAJ2010 Oct 19; 182