Can poppy seeds cause false positives for opiates in a drug test? USAMDT send the facts..
Poppy seeds do contain trace amounts of morphine, but it would require about 100 poppy seed bagels to reach enough to cause a positive (failed) test result. A 1996 episode of the highly popular sitcom Seinfeld may have helped perpetuate this urban legend. An episode of MythBusters tested this legend, and found that as little as three poppy-seed bagels was enough to cause a positive result for the remainder of the day they were eaten (though participants tested clean the following day). The results of this experiment are inconclusive, however, because a test was used with an opiate cutoff level of 300 ng/mL instead of the current SAMHSA recommended cutoff level used in the DOT or DOT Look A Like 5 test, which was raised from 300 ng/mL to 2,000 ng/mL in 1998 in order to avoid such false positives from poppy seeds. In addition, one thing poppy seeds do not do is serve as an alibi for heroin: a unique metabolite (6-monoacetylmorphine or 6AM) is produced from heroin use that is never produced from consuming any other substance, let alone poppy seeds.
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