Simultaneous extraction and determination of monoamine neurotransmitters in human urine for clinical routine testing based on a dual functional solid phase extraction assisted by p... von Li, Xiaoguang (Sunny), Li, Shu, Kellermann, Gottfried

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Simultaneous determination of three estrogens in human saliva without derivatization or liquid-liquid extraction for routine testing via miniaturized solid phase extraction with LC... von Li, Xiaoguang (Sunny), Li, Shu, Kellermann, Gottfried

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Pre-analytical and analytical validations and clinical applications of a miniaturized, simple and cost-effective solid phase extraction combined with LC-MS/MS for the simultaneous... von Li, Xiaoguang (Sunny), Li, Shu, Kellermann, Gottfried

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An integrated liquid chromatography–tandem mass spectrometry approach for the ultra-sensitive determination of catecholamines in human peripheral blood mononuclear cells to assess... von Li, Xiaoguang (Sunny), Li, Shu, Kellermann, Gottfried

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A novel mixed-mode solid phase extraction coupled with LC–MS/MS for the re-evaluation of free 3-nitrotyrosine in human plasma as an oxidative stress biomarker von Li, Xiaoguang (Sunny), Li, Shu, Kellermann, Gottfried

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A simple dilute and shoot approach incorporated with pentafluorophenyl (PFP) column based LC-MS/MS assay for the simultaneous determination of trimethylamine N-oxide and trimethyla... von Li, Xiaoguang (Sunny), Li, Shu, Kellermann, Gottfried

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Development and validation of a specific and sensitive LC-MS/MS method for quantification of urinary catecholamines and application in biological variation studies von Li, Xiaoguang (Sunny), Li, Shu, Wynveen, Paul, Mork, Kathy, Kellermann, Gottfried

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Tailored 96-well μElution solid-phase extraction combined with UFLC-MS/MS: a significantly improved approach for determination of free 3-nitrotyrosine in human urine von Li, Xiaoguang (Sunny), Li, Shu, Kellermann, Gottfried

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Tailored 96-well [mu]Elution solid-phase extraction combined with UFLC-MS/MS: a significantly improved approach for determination of free 3-nitrotyrosine in human urine von Li, Xiaoguang (Sunny), Li, Shu, Kellermann, Gottfried

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Integration of Miniaturized Solid Phase Extraction and LC-MS/MS Detection of 3-Nitrotyrosine in Human Urine for Clinical Applications von Li, Xiaoguang Sunny, Li, Shu, Ahrens, Melissa, Kellermann, Gottfried

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Integration of Miniaturized Solid Phase Extraction and LC-MS/MS Detection of 3-Nitrotyrosine in Human Urine for Clinical Applications von Li, Xiaoguang Sunny, Li, Shu, Ahrens, Melissa, Kellermann, Gottfried

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