<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Do you know much about drug testing?
<|assistant|>
Drug testing is the process of determining the presence or absence of certain drugs or metabolites (byproducts of drugs) in an individual's system. Drug testing can be used for various purposes such as medical or occupational screening, forensic investigations, and research. Some common types of drug tests include urine, saliva, blood, and hair follicle tests. These tests can detect the presence of both illegal drugs and prescription medications.