Saliva Drug Tests
June 11, 2010 in Employee Drug Testing Information
Recently there has been extensive research on the use of saliva in drug testing. A person’s saliva has certain advantages and certain disadvantages when comparing the use of urine in testing for the presence of drugs. The most obvious advantage is simply that the collection procedure is easier and less prone to possible efforts to beat the drug test by substituting a clean drug test sample as is sometimes the case in urine drug testing. The ease at which a person’s saliva can be tested make saliva drug tests less invasive than other forms of drug testing. The collection of saliva for saliva drug tests is easier and safer when compared to urine or blood.
It simply involves using a swab that looks very similar to a common toothbrush but in place of bristles a pad that servers, to collect the saliva in the mouththe pad is then placed between the lower cheek and gum for about two minutes. Once saturated with saliva the pad is then transfered to a collection vial. Many of the most commonly abused drugs can be detected in saliva including marijuana, thc, heroin, cocaine and amphetamines.
However there are disadvantages and those mostly relate to the short drug detection time limitation of saliva drug tests.
Simply put saliva cannot be used to detect historical drug use.
Most drugs do not linger in saliva and disappear in anywhere from twelve to twenty four hours. Because of this saliva testing is being considered for drug detection in situations where recent drug use must be detected including vehicle and equipment drivers, those involved in workplace or other accidents and not as a use to detect past drug use.
What is saliva? The actual medical definition of saliva is oral liquids produced by the many saliva glands in the human anatomy. The average adult produces in excess of one thousand millileters of saliva on a daily basis.
How reliable are saliva drug tests? An extensive study by the University of Utah in Salt Lake City concludes that it is a reliable method for drug detection. The universities’ Center for Human Toxicology concluded that drug use and drug concentrations can be determined by analyzing saliva.