Courts Ruling: THC Not Enough Evidence

Arizona Courts ruled today that THC in a driver’s blood is not enough evidence to prove they are driving under the influence.

The Court acknowledged that THC, a secondary metabolite of marijuana, can show up in blood tests for a month after someone has used the drug and that the presence of that metabolite does not indicate someone is impaired.

This means Arizonans who smoke marijuana can not be charged with driving while impaired without evidence showing the driver is affected by the drug.