Drug testing kit. Drug screening stick that is used to test oral fluid samples for the presence or absence of drugs. The kit can detect four classes of drugs: cannabinoids, found in cannabis the resin from the hemp plant; cocaine, an alkaloid drug derived from coca; opiates, also known as opioids, which are derived from the opium poppy; and methamphetamine, a synthetic stimulant drug. This last test can also screen for the presence of MDMA, commonly known as ecstasy or E. This is ORALscreen from Avitar Inc. , of Massachusetts, USA.