Quantification of Buprenorphine, Norbuprenorphine and 6-Monoacetylmorphine in Urine by Liquid Chromatography-Tandem Mass Spectrometry

Chao Yuan, Katherine Lembright, Courtney Heideloff and Sihe Wang^*

Department of Clinical Pathology, Cleveland Clinic, Cleveland, USA, E-mail: chaoyuan@gmail.com

^*Corresponding Author: Sihe Wang, LL3-3, 9500 Euclid Ave, Cleveland, OH 44195, USA, Tel: 216-445-2634, Fax: 216-445-0212 Email: