The drug test for determining if someone uses hemp or marijuana products on a regular basis or lately is intended to detect the presence of Delta-9 THC in the body. Due to the identical metabolites that both these chemicals break down to, the same test may identify Delta-8 THC as well. Delta Extrax products contain roughly 0.3 percent Delta-9 THC, which might cause a positive test result if ingested near to the time of the test.