A female asked:
I am taking a prescribed dose of vyvanse, (lisdexamfetamine) and also prescribed oxycodone. Last urine test showed hydrocodone, no o-oxycodone. Could Vyvanse (lisdexamfetamine) cause this?
1 doctor answer
Dr. Jack Goloff answered
35 years experience in Family Medicine
Test limitstion: This is a limitation of in office urine screen testing. The kind that are commonly used have a high error rate. The next step should be sending the urine out to a laboratory for confirmation. The tests done there are highly accurate. Office cup tests are enzyme linked immuno-assay, laboratories can do a test called liquid chromatography/ mass spectroscopy.
Answered on Feb 25, 2017
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