Kleaner and “anti-THC” sprays: no guarantee before driving
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What do these products really do?
Manufacturers generally highlight cleaning or temporary modification of the oral environment. Local action in the mouth does not mean THC has disappeared from the body or that a later sample will be negative.
The result depends on many factors: product consumed, dose, usage frequency, elapsed time, test threshold, sample quality, and individual characteristics.
Why can a test remain positive?
After cannabis use, THC can persist in the mouth. Rinsing, mouthwash, chewing gum, or a spray can temporarily alter saliva without predictably removing the substance sought.
A result obtained with a home self-test also does not allow certain prediction of a later official test: the device, threshold, timing, and procedure may differ.
The most common interpretation errors
- confusing lack of sensation with absence of detectable THC;
- thinking a negative result is valid for several hours;
- believing that a spray neutralizes all tests;
- using a self-test as permission to drive;
- ignoring that an invalid sample must be retaken.
What is the purpose of a THC self-test then?
Used according to its instructions, a self-test can help prevention by indicating if THC is detected above the set threshold at the time of sampling. It does not precisely measure impairment and does not guarantee a future result.
