A drug test, also known as a toxicology screening, determines whether there are any illegal or prescription drugs in your system , such as in your urine, blood, saliva, sweat, or hair. However, every so often, you might get a false positive drug test in return. ...
Many companies require a drug test for new employees. Some have random drug screening for current workers. If employees who abuse substances hear about a drug test coming up, they may try to cheat it. This is why it is important to keep the drug test date secret,...
