A member asked:

How long do you need to be off vyvanse (lisdexamfetamine) so it will not show up in a urine drug screen?

6 doctors weighed in across 2 answers
Dr. Bahman Omrani answered

Specializes in Pain Management

4 days approx: Depends on the type of assay test (eia/elisa, lc-ms), but generally 4 days. It also depends on the sensitivity of the test.

Answered 5/9/2016

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3-5 days: This somewhat depends on the dose and frequency you are taking it. But, as a general rule of thumb, most of the amphetamines are detectable for up to 5 days after last use.

Answered 4/13/2016

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