(KPIX-TV) A new breathalyzer being tested by law enforcement, not only can tell them if a person has been smoking marijuana, it can also tell if a person has eaten anything laced with marijuana.

Wednesday, Oakland-based Hounds Labs, Inc. announced it was field-testing a device called The Hound that can detect tetrahydrocannabinol (THC) the active ingredient in marijuana after consumption of both smoked and edible pot products.

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