it's between 12-24 hours, check out this link, they've got anything you'd need:

http://www.erowid.org/psychoactives/...ng_info1.shtml

there's a table at the bottom displaying the detection times of alot of drugs, and different testing methods
usedchemicals Reviewed by usedchemicals on . Oral Drug Test What is the detection period for Oral (salvia) drug testing? Please Help!!!! Rating: 5