Drug testing kit. Drug screening stick that is used to test oral fluid samples for the presence or absence of drugs. The window (centre left) displays positive results, the C" label is a control result. The kit can detect four classes of drugs: cannabinoids (THC), found in cannabis the resin from the hemp plant; cocaine (COC), an alkaloid drug derived from coca; opiates (OPI), also known as opioids, which are derived from the opium poppy; and methamphetamine (MET), 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."