anti drug test

hey guys, I'm interested to know if there's any guaranteed way to pass a drug test. I don't think that the advertised detox supplements can do any good, so I'm wondering if anyone knows any method that I can use to pass a drug test.

I have tested the supposed methylone hydrochloride that I have just synthesized with the help of an anti-drug test from the brand (EZTEST) but I cannot appreciate the colors well, so I don't know if it tested positive for methylone. Thank you all!