Can eating everything bagel make a person fail a drug screening blood test?

Poppy seeds: Some drug tests will give a false positive with poppy seeds. Let the examiner know beforehand.

Poppy Seeds: Yes. Poppy seeds can cause a drug screen to be positive for opiates. If you are under any kind of random drug screening it is always best to avoid anything that can trigger an investigation. Poppy seeds should be avoided.

Poppy seeds: Poppy seeds can give a false positive for opiates.