Re:
Will hemp show up on a drug test?
hemp containing products, including everything from hemp seed oil nutritional supplements to hemp seed candy, cookies, cheese, bread, cooking oil, and general seasoning, means that ingesting ANY of these products could potentially cause a false positive result on a test for marijuana.
Poppy seeds can show up on a drug test as morphine, and cold remedies that contain codeine can also cause a positive result for morphine.
Valium can produce erroneous indications of PCP (Phencyclidine), and other cold remedies can apparently produce false reports of methamphetamine usage.
Valerian root is reported to cause false positives for benzodiazepines.
The list of positives goes on but your concern was hemp.