DRUG TESTING Drug tests are a chemical analysis used to detect the presence of drugs in a small sample of urine or sometimes in blood. There are six types of drug testing: Pre-employment, Random, For-cause, Periodically Announced, Post-accident, and Rehabilitation. Pre-employment is testing that is done in a work place after you begin working and they only get to keep working if they pass the drug test. Random drug testing is testing without the person …showed first 75 words of 540 total…

…showed last 75 words of 540 total…plate that is covered with a thin layer of jellylike substance. A drop of urine is applied near one edge of the gel surface. The gel shows what kind of drugs are in the system. The Gas chromatography is the only test that claims to be 99.9 percent accurate. It is a $15,000 machine. It works by injecting a tiny bit of urine into a port and there are gases that determine what drugs have been used.