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Weed spit test can detect if you're driving high in 3 minutes
A new speedy spit test could be the breathalyzer's counterpart when it comes to roadside testing for marijuana. The technology, developed by Shan Xiang Wang from Stanford University, can detect the presence of THC (the main chemical in weed that makes you high) in saliva within three minutes. Cops don't even need to bring samples to the lab -- the sensor that can detect THC is portable and delivers results to phones via Bluetooth.
