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. Author manuscript; available in PMC: 2014 Nov 15.
Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2013 Sep 8;939:23–31. doi: 10.1016/j.jchromb.2013.09.004

Fig. 4.

Fig. 4

Plasma concentrations of buprenorphine and metabolites in a research subject administered (A) intravenous buprenorphine (0.2 mg) or (B) sublingual buprenorphine (2 mg).