New marijuana breath test promises accurate readings of THC levels
Detecting marijuana by way of a road-side test seems an obvious enough measure as the legalization movement gathers momentum, but an effective technology is yet to really be established. Current approaches relying on blood and urine samples are unable to distinguish between somebody driving under the influence, and somebody that has simply used the drug sometime in the last month. But one US company now claims to have developed a breathalyzer system that can measure levels of THC in one’s breath to determine how much a road user is impaired when behind the wheel.
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