https://www.prometheusbio.com/products/cotinine-cot-drug-abuse-screen-test-cassette-saliva/ Drug Screen Test Cassette (Saliva) A rapid, screening test for the simultaneous, qualitative detection of Drugs and their metabolites in human oral fluid that can be performed without the use of an instrument. It is an ideal choice for government agencies, law enforcement agencies, and criminal justice departments. The advantages of oral drug testing include low cost, environmental friendliness, non-invasive, and no adulteration.