Can Eating Poppy Seeds Make You Fail a Drug Test?
Poppy seeds can cause a positive drug test for opiates. The edible nutritious seeds come from the opium poppy (Papaver somniferum), the same plant that is used to produce opium, heroin, morphine, and codeine. Although the seeds themselves do not contain opiates, they are frequently contaminated with morphine residue during harvesting.
Processing and washing removes much of this residue, but trace amounts can remain. As a result, eating foods heavily coated with poppy seeds—such as bagels, muffins, or pastries—can sometimes trigger a positive urine test for opiates. The likelihood depends on how many seeds were consumed, their country of origin and processing, and the sensitivity of the drug test being used. It is known that opiate residues from poppy seeds can be detected in urine up to 48 hours after consumption and may persist even longer.
There are numerous anecdotes of a single poppy-seed-encrusted bagel being enough to cause someone to fail a drug test, and some parole programs prohibit participants from eating poppy seeds altogether. However, the amount of opiates detected after eating poppy seeds is far lower than the levels typically associated with narcotics abuse. To reduce false positives, many testing programs have raised the threshold required for a positive result. If you are expecting a drug test, it is best to avoid poppy seeds for at least several days beforehand.
