Does Eating Poppy Seeds Affect Urine Drug Testing?

According to Beth Israel Deaconess Medical Center, eating a poppy seed bagel can cause a positive opiate result on a drug test up to 60 hours after ingestion.

References

• Beth Israel Deaconess Medical Center: Poppy Seeds and Drug Testing
• University of Southern California: Does Eating Poppy Seeds Affect Opiate Drug Tests?