A member asked:

How can i come up positive for methadone when i have not taken it since may? is it possibly stored in large kidney stones?

3 doctors weighed in across 2 answers

See below : It can not be stored in a kidney stone. If you have not taken it in 4 months there is no way it could be positive.

Answered 10/10/2012

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Type of test: Was it a screening test or a confirmatory test. Screening tests do give false positives and require confirmation by mass-spectrometry. Kidney stone would not give a false positive test.

Answered 1/25/2020

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