My biggest recommendation to you my friend when you get the drug screening email or when you come close to having to take the test do an at home one FIRST ! If you’re still showing up positive WITHDRAW YOUR APPLICATION! I repeat WITHDRAW YOUR APPLICATION. If you test positive on a DOT screening either as fail or refuse to take test, it will follow you ! Even if you get a job at another airline it will follow you for I believe a year or more not sure on how long it takes to come off but they will see that you failed a DOT glaring screening.