How long after consumption can the individual drugs be detected in saliva?
The time window during which drugs can be detected in oral fluid depends on various factors; e.g. the quantity consumed, the frequency of consumption, the time between the drug consumption and the test and a person’s individual metabolism. Various studies have shown that amphetamines/methamphetamines remain in the saliva in sufficient quantities for detection for up to 50 hours; cocaine can be detected for up to 12-36 hours, opiates for up to 24 hours and longer, and cannabinoids for up to 24 hours.
