New research casts doubt on roadside saliva tests for Drive Under Influence (DUI) cases

New research has cast doubt on the accuracy of roadside saliva tests in drive under influence (DUI) cases.

Police throughout the country use saliva-based tests for tetrahydrocannabinol (THC), the active compound in cannabis.

But researchers from the University of Sydney's Lambert Initiative found that the levels of THC in a person's system do not directly correlate to how badly a person is affected by the drug.

Doubt Over Drive Under Influence of Drug Charges

The researchers combined the results of 28 independent studies to get their results, looking at the effects of both ingested and inhaled THC.

They came to the conclusion that the levels of THC were more indicative of impairment in occasional users compared to regular users.