Herbert Hill
Herbert Hill

Washington State University researchers are working to develop a roadside test that would detect marijuana in a person’s breath.

Studies began last month on a prototype that tests breath for THC, the chemical responsible for most of marijuana’s psychological effects.

Public interest in the research is high, though “we have a long way to go before we have a dependable test for THC,” said Herbert Hill, a WSU chemistry professor, who spoke at a medicinal plants conference last week in Spokane.

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The Spokesman Review