The at-home DOA test is a test done to determine if illegal drugs or one or more prescriptions are present in the urine. This test is majorly used for detecting the presence of drugs such as cocaine, marijuana, opiates, amphetamines, methamphetamines, benzodiazepine, methadone, barbiturates, ecstasy, tricyclic antidepressants, and oxycodone.  This test involves two steps. The first steps...