تسجيل الدخول

تسجيل

Collection of saliva , Dealing with adulterants

المؤلف:  Sue Jickells , Adam Negrusz (Editors)

المصدر:  Clarkes Analytical Forensic Toxicology

الجزء والصفحة:  170

2026-10-07

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Collection of saliva , Dealing with adulterants

One of the advantages of saliva testing is that the sample is collected under direct observation. Before collection of saliva or oral fluid, the collector should observe the donor for a 10–15minute period during which the donor does not smoke or consume food or drink. Experience with saliva and breath-alcohol testing is that contaminants, such as ascorbic acid from foods or drink, clear from the oral cavity either by the swallowing of saliva or by dissipation into the general circulation within 10–15 minutes. Also, a simple experiment shows that a person cannot hold saliva, especially saliva that contains liquid or solids, in the mouth for more than 3 minutes without swallowing or dribbling (Jehanli et al. 2001). Rinsing of the mouth is not required to collect saliva, and it does not reduce the levels of drugs found in oral fluid.