![](https://learnaboutsam.org/wp-content/uploads/2023/02/sam-default-red.png)
Washington State Releases New Numbers Showing Increase in THC-Related Impaired Driving Cases
Preliminary Data Released Today From Washington State Toxicologist
(SEATTLE, WA) – Today, the Washington State toxicologist released preliminary data from the first four months of 2015, Jan-April, showing that the percentage of total driving cases testing positive for THC jumped from 28% to 33% for the first part of 2015 versus 2014. This is a significant jump not only compared with 2014, but also compared with the percentage in 2013 (24.9%) and 2012 (18.6%).
![](https://mlsvc01-prod.s3.amazonaws.com/d75ceb5f201/9b92e5ae-3828-4fa9-8860-771eb538c395.png?ver=1439916515000)
The average and median THC amount also grew from 2014.
The entire report can be found here.