Can the amount of methadone in a person's system be detected by urine?

I believe it can be considering how long you have been taking it and how much , it would probably come to be recognized by the test as an opiate since methadone is a derivative/synthetic opiod, its like marijuana if you have been taking it for months it will takes am extended time for it to clense from your system.

-Rob ~Long Time Methadone User forf