I've Researched The Side Effects Of Ingesting Hemp / Hemp

I've researched the side effects of ingesting Hemp / Hemp oils. I see that theirs great benefit from taking this supplement, but I also ran across an article which read " analytical toxicology proves that taking this supplement your urine can show positive for THC! I ask this question so as long as one can provide proof of purchase of this supplement as one would with a prescription for marinol ( dronabinol ) would that be gamed fare to employers? I ask cause MRO’S accept poppy-seed for its illegal substance intake.