If im taking methadone will it come out as if im taking heroin?

Methadone does not show up in a basic opiate test that is part of the standard pre-employment drug test and which can detect heroin, codeine and morphine (and perhaps oxycodone, hydrocodone, and dilaudid). A Methadone specific test must be performed to detect Methadone. This test is not uncommon and is part of the second tier "extended" test done by many companies.