A mouth swab drug test, also known as a saliva test or oral fluids test, collects saliva from inside the job applicant or employee's mouth.
The saliva is tested for use of drugs during the previous few hours up to one to two days. Saliva can be tested for alcohol, marijuana, cocaine, amphetamines, and methamphetamines.
Saliva is easy to collect and test, so this is the simplest and least invasive type of drug testing.
Drug and Alcohol Tests