i found a little information about this online: subj: zofran date: <negative_smiley>24/2010 we have a patient who is taking zofran and came up positive on a drug test for syboxone. do you know of any reason why someone taking zofran would test positive for syboxone? tim askdocweb: we were unable to discover any reason for zofran to cause a false positive on a urine drug screen. zofran (ondansetron) is used to prevent nausea and vomiting caused by cancer chemotherapy radiation therapy and surgery. zofran is in a class of medications called 5-ht3 receptor antagonists. it works by blocking the action of serotonin a natural substance that may cause nausea and vomiting. so to me that means there might have been something else causing the false positive. could you have eaten poppy seeds for example? also he shouldn't have kicked you out of his practice without a confirmation test because those screenings are known to have a certain error rate. either call his boss and complain or get yourself a new doctor who will actually give the chance to clear yourself.
can ondansetron show up positive for thc on a drug test? . i was recently dropped from my doctor after 16 years of being a model patient. in april i took a drug test and was terminated because he said my test was bad. that's all the explanation i got. i don't do any drugs i'm not prescribed but i was given zofran (ondansetron) for nausea. i only take it a couple times a month. can this prescription in anyway make you have a bad drug test? if not and he won't tell me specifically what was wrong with my drug test. what can i do so this doesn't happen again?