Pure CBD left a drug test clean; CBD cannabis did not
Eighteen adults took 100mg of cannabidiol four ways and none went above the cannabis screening cutoff. Three of the same eighteen did after vaporising CBD-dominant cannabis, which contains THC.
What the study found
Pure cannabidiol did not trigger a positive cannabis test
Eighteen adults took 100mg of cannabidiol as a vapour, a capsule, a syrup and the prescription solution; none produced urine above the cannabis screening cutoff. Three of the same eighteen did after vaporising CBD-dominant cannabis, which contains THC. It is the THC that a drug test finds.
The caveat · One dose each, not daily use
Single doses in a residential unit, about six people per formulation, so this is not a test of daily use. Cannabidiol did not convert to THC by any route tried here, but only the routes and formulations tried are covered.