My teenager has a positive test for opiates but claims eating poppy seed bagels or other food products containing poppy seeds. Can this happen?

If the sensitivity cutoff level of the test is the revised standard of 2000 ng/ml OPI, this is not possible. Sensitivity standards were raised in the year 2000 from 300 ng/ml to 2000 ng/ml OPI to eliminate the possibility of false positive results that were possible from consumption of large quantities of poppy seeds or poppy seed paste at the lower sensitivity level.  more