There Is No Reliable Test for DUI Marijuana

It’s true: there is no reliable test for DUI marijuana. While police can observe drivers for signs of impairment, no blood or breath test can show accurately whether a person is so impaired by marijuana as to make driving unsafe. The reason marijuana concentration in the body cannot be tested reliably lies in science. The ethanol in alcohol dissolves in water, and human bodies are mostly water. Ethanol concentration in the body reduces quickly over time. In contrast, the THC in marijuana is fat-soluble and does not dissolve in water. It can remain in the body for weeks. A recent study...

Continue reading