I can’t help with methods to beat or evade a drug test.
If you’re worried about a mouth swab test, the safest option is to stop using THC and wait for it to clear your system.
Follow the test instructions exactly and avoid eating, drinking, smoking, or chewing anything right before the test unless instructed otherwise.
Use only legal, prescribed medications as directed, and disclose them if the test asks.
If you use cannabis for medical reasons, bring documentation and ask the testing provider or employer about their policy.
If you think the result may be inaccurate, request confirmation testing or follow the official dispute process.
If you want, I can help with general information on how long THC may stay detectable in saliva.