Marijuana testing

Blood Tests For Cannabis Drivers Are Unscientific

A new study has concluded that state tests of the impairment of drivers who have smoked cannabis do not have any scientific basis.

The study released Tuesday by the AAA Foundation for Traffic Safety found that drivers can have a low level of THC, the active ingredient in marijuana, in their blood and be unsafe behind the wheel, while others with relatively high levels may not be a hazard.

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