<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Do you know much about drug testing?
<|assistant|>
Yes, I do. Drug testing is a process by which the presence or absence of certain drugs and / or their metabolites are detected in a biological sample, such as a urine, blood, or hair specimen. Drug tests are used by employers to monitor employees for illicit drug use and for compliance with drug-free workplace policies, by parents to detect use of illicit drugs by their children, by athletes to demonstrate their compliance with athletic rules, and by police to detect drug use by criminal suspects. Depending on the type of drug test being administered, samples can be tested for the presence of both illicit drugs as well as prescription medications. Different types of drug tests provide different levels of accuracy and detect drugs differently. The results of a drug test can vary depending on when the test is administered, how the collection process is conducted, and the type of drug test performed. Most drug tests can detect recent use and, therefore, the results of the test should not be assumed to be conclusive.