0mg nicotine

Hello! So, for whatever reason, pre-employment nicotine testing is becoming a thing in my field. I use 6 mg juice, so I'm just going to switch to 0 mg. Everything I've read says 2 weeks should be good to pass the test. My question is, how much residual nicotine will be left in the vape from previously using 6 mg? I took it apart and cleaned it…. Is that sufficient? Or am I still consuming enough nicotine to fail a test?

Original source: https://www.e-cigarette-forum.com/threads/0mg-nicotine.961751/