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. 2018 Sep 26;6(10):355–364. doi: 10.12998/wjcc.v6.i10.355

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©The Author(s) 2018. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is 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.

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Dynamic distribution of quality control samples throughout the Ultra-high performance liquid chromatography-tandem mass spectrometry analysis. Colored bars indicate the quality control samples that are projected onto the first principal component with a range from -2 SD to +2 SD. QC: Quality control; SD: Standard deviation.