It should be noted that standard urine tests can detect marijuana in your system for up to 30 days, while hair testing can detect it for up to six months. However, a positive test result does not necessarily indicate that someone was under the influence of marijuana while driving.
In order to find someone guilty of driving while Intoxicated due to marijuana use, the prosecution must demonstrate with certainty that the individual's ability to think or operate their body was negatively impacted by the drug while driving. That's why having a skilled Austin marijuana DWI lawyer defending you is so important.