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A 41-year-old female asked:

How long will methadone metabolites stay in stored urine?

1 doctor answer3 doctors weighed in
Dr. Julie Abbott
Preventive Medicine 46 years experience
I don't know: I was able to find information about a lab which routinely does methadone drug testing.Their service keeps specimens for retesting for 30 days. I would presume that the tests would be accurate at least for that period of time. However, perhaps different tests/labs have different periods of time for which they ensure accuracy. Part of it would depend on how high the concentration of methadone is.
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Last updated Jan 23, 2020
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