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. 2018 Oct 26;31(2):e000010. doi: 10.1136/gpsych-2018-000010

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© Author(s) (or their employer(s)) 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0

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High-performance liquid chromatography chromatograms of venlafaxine and O-desmethylvenlafaxine. (A) blank plasma; (B) blank plasma spiked with O-desmethylvenlafaxine (1), mexiletine (2) and venlafaxine (3); (C) the limit of quantitation (10 ng/mL) of venlafaxine and O-desmethylvenlafaxine; (D) the chromatogram of plasma from patient.