Welcome UTC! I am also at 3 weeks from a staggered Suboxone/Methadone use. Super glad to hear you're off and doing well though. As for Methadone having it's uber-long half-life, I've read reports of people's tests showing positive after 1, sometimes even 2 weeks. But there are all kinds of variables like frequency of use, quantity, length of use, body type and weight.....so there's no real answer. But it's great that you've come so far, that's really awesome. Best of luck!