| A drug test is a professional study of a biological | | | | a positive result is ordinarily not ratified without a |
| sample including urine, hair, blood, sweat, or saliva | | | | assessment by a Medical Review Officer that will |
| - to confirm the presence or absence of specified | | | | ordinarily interview the person who failed the drug |
| parent drugs or their metabolites. | | | | test. |
| Laboratory-based drug testing is done in a | | | | No test is 100% accurate. Surveys of drug |
| two-tiered way using two unique kinds of | | | | testing labs have discovered astoundingly high |
| detection approaches. The first is often known as | | | | error rates from poor quality assurance. Although |
| the screening test, and is administered to all | | | | high-quality labs have added safeguards to curtail |
| specimen that enter the laboratory. The second, | | | | the danger of "false positives," even if error |
| known as the confirmation test, is only | | | | measurements are only one in 10,000, the |
| administered to samples that test positive for the | | | | extension of drug testing to tens of millions of |
| screening test. After a suspected positive | | | | workers as necessitated by the government |
| specimen is discovered from screening, the | | | | means that a lot of workers will be falsely |
| specimen is marked and tested with the | | | | accused of drug use. |
| confirmation test. Samples that are negative on | | | | Since urine tests do not detect the psychoactive |
| the screening test are thrown away and noted as | | | | ingredient of marijuana, THC, but instead |
| negative. The confirmation test in a good number | | | | alternate, nonactive metabolites, they do not |
| of laboratories is extremely specific but also | | | | assess impairment; even so, this actuality is of no |
| moderately not cheap to administer. False positive | | | | importance to hiring managers in the current |
| samples from the screening test will be negative | | | | anti-drug hysteria. If you are looking for a job, it is |
| on the confirmation test. Samples testing positive | | | | prudent to expect being tested and do not use |
| for both screening and confirmation tests are | | | | cannabis. Still, identifying that many of you may |
| reported as positive to the individual who required | | | | risk drug testing on short notice, you may need |
| the screening. Several labs retain positive | | | | to buy appropriate detox products to ensure |
| specimen for a period of time in case of a | | | | your positive outcome. |
| disputed outcome or lawsuit. For job drug testing, | | | | |