Kirsh, PhD, Kenneth L., Paul J. Christo, MD, MBA, Howard Heit, MD, Katherine Steffel, PharmD, and Steven D. Passik, PhD. “Specimen Validity Testing in Urine Drug Monitoring of Medications and Illicit Drugs: Clinical Implications”. Journal of Opioid Management 11, no. 1 (January 1, 2015). Accessed November 24, 2024. https://wmpllc.org/ojs/index.php/jom/article/view/144.