An Overview of Drug Testing
Drug testing can be done through a variety of methods, using samples that include urine or a few strands of hair. Common drugs tested for include marijuana, cocaine, steroids, opiates and amphetamines. Alcohol is not a substance that can be detected using standard drug testing procedures, since the substance does not stay in the body long enough to show up in test results. Current use of alcohol can be tested by breathalyzers and other testing methods.