Vape Materials Toolkit Texas DSHS Test For Vaping UK Drug Testing Testing Vape Carts for Safety Do you know what's in your THC vape? THC vapes are increasingly being shown by testing to contain synthetic substances with increased risk including unexpected effects due to differences in strength. VAPING POP QUIZ! , 1 Vapes contain _________ & __________ substances., 2 Teenagers and young adults are the primary users of vape pens because of the variety of ________ that are available., 3 Beyond the ban: the importance of continuing to test disposable vapes