A confirmed presence of a specific substance in a saliva specimen, analyzed through laboratory procedures, indicates recent exposure to the substance. For instance, detection of tetrahydrocannabinol (THC) in oral fluid suggests cannabis use within the past few days. This method provides a relatively non-invasive means of sample collection and offers quick results, often utilized for workplace screening or roadside testing.
Saliva-based substance detection plays a critical role in various settings, contributing to workplace safety, traffic law enforcement, and drug rehabilitation monitoring. Its rapid turnaround time allows for timely interventions and decisions. Historically, urinalysis served as the primary method for drug testing. However, the advent of oral fluid analysis has introduced a less intrusive and more convenient alternative, expanding the possibilities for drug detection in diverse situations.