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Drug Testing
by Erowid
Tested for in Standard Drug Tests?
Tested for in Extended Drug Tests?
Possible to Test for?
Detection Period in Urine
1-10 days

Urine Testing
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.

Though the published information we've found suggests that methadone is not detectable after a few days, we have received reports from methadone maintenance users that they have been found methadone-positive on urine screens for 10-30 days after their last dose.
Erowid's drug testing information is a summary of data gathered from site visitors, journal articles, websites, and other resources. Detection periods depend on amount and frequency of use, metabolic rate, body mass, age, overall health, drug tolerance, and urine pH of each individual. Many substances that are not tested for in basic or extended urinalysis tests CAN be tested for by a laboratory willing to go to the trouble, although that is uncommon.