Multi Drug Test SelfCheck. Drug test kits can help detect intake of illegal drugs.. Drug test kits are easy to use, accurate and reliable. The SELFCheck test requires only a small urine sample and produces a visual result in less than 5 minutes.. Substances detected by drug test kits. Cocaine. Amphetamine. Cannabis (THC). Methamphetamine (Ecstacy/mAMP). Opiates (heroin). Benzodiazepines