Most workplace drug screens and tests only target delta9-tetrahydrocannabidiol (THC) and do not test for the presence of cannabidiol (CBD) or other legal, natural hemp-based constituents. However, some studies have shown that eating hemp-based foods, drinks and oils can, in rare cases, cause false-positive screening results when screening urine and blood specimens for THC. These false-positive results for THC are subsequently shown indeed to be incorrect – i.e. falsely positive when actually negative for THC – when specific confirmatory tests are performed. As when taking any new medication or dietary supplement, we recommend you first consult with your healthcare provider.