E-Newsletter Archive

February 2011 Archives

What is the window of detection for drugs in urine, saliva, sweat, and hair?


In general, the window of detection in saliva is shorter than testing any other medium. The presence of drugs in saliva is more likely to indicate current intoxication from the drug, especially for marijuana. Sweat and hair offer longer look-back windows, as both of these testing methods continuously monitor an individual's drug use. The following table gives estimates for the window of detection for the most commonly abused drugs.