Is It Possible For People To Test Positive For Cannabinoids if They Passively Inhale Marijuana Smoke From Those Nearby?
Some individuals may claim “passive inhalation” of marijuana smoke caused their positive test. However, studies have shown that the exposure would have to be so constant, so prolonged, and in such a confined space (sealed phone booth with four smokers smoking non-stop for eight hours) as to represent an absurd possibility. For this reason, many companies use a higher limit of detection for cannabinoids (50 ng/ml). This adjustment is high enough to rule out passive inhalation as a reason for a positive test result.
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