Narang, MD, S., Wasan, MD, MSc, A.D., Ross, MD, E.L., Michna, MD, E., Chen, MD, J.-Y. and Jamison, PhD, R.N. 2018. Patients with chronic pain on opioid therapy taking dronabinol: Incidence of false negatives using radioimmunoassay. Journal of Opioid Management. 4, 1 (Jan. 2018), 21–26. DOI:https://doi.org/10.5055/jom.2008.0004.