A drug test can be used to determine whether there are any illegal drugs in the system. Drug testing can be performed through several methods. Urine is the most common type of testing done, especially by employers. Hair analysis and blood samples can also be used when checking for drugs or alcohol in the system.
A drug test is a technical analysis of a biological specimen _ for example urine, hair, blood, sweat, or oral fluid / saliva _ to determine the presence or absence of specified parent drugs or their metabolites. Major uses of drug testing are to detect the presence of performance enhancing steroids in sport or for drugs prohibited by laws, such as cannabis, cocaine and heroin. A "10-panel urine screen" consists of the following: 1. Amphetamines (including Methamphetamine) 2. Barbiturates 3. Benzodiazepines 4. Cannabinoids (THC) 5. Cocaine 6. Methadone 7. Methaqualone 8. Opiates (Codeine,Morphine, Heroin,Oxycodone, Vicodin, etc.) 9. Phencyclidine (PCP) 10. Propoxyphene The following chart from LabCorp gives approximate detection periods for each substance by test type. The detection windows depend upon multiple factors_drug class, amount and frequency of use, metabolic rate, body mass, age, overall health, and urine pH.
Contributions by CKelly, 184.108.40.206, and GraemeL.