1. Clinical Interpretation of Urine Drug Tests
Karen E. Moeller, PharmD, BCPP, Julie C. Kissack, PharmD, BCPP, Rabia S. Atayee, PharmD, BCPS, Kelly C. Lee, PharmD, MAS, BCPP 
Mayo Clinic Proceedings 
Volume 92, Issue 5, Pages (May 2017)
DOI: /j.mayocp
Copyright © 2016 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Figure 1
Metabolism of opioids.136,141 aMorphine is metabolized to hydromorphone in very small amounts.
Mayo Clinic Proceedings  , DOI: ( /j.mayocp )
Copyright © 2016 Mayo Foundation for Medical Education and Research Terms and Conditions

3. Figure 2
Basic metabolism of benzodiazepines aFlunitrazepam in not available in the United States.
Mayo Clinic Proceedings  , DOI: ( /j.mayocp )
Copyright © 2016 Mayo Foundation for Medical Education and Research Terms and Conditions