Historical review of sample preparation for chromatographic bioanalysis: pros and cons
Chang, Min S., Ji, Qin, Zhang, Jun, El-Shourbagy, Tawakol A.
Published in Drug development research (01.05.2007)
Published in Drug development research (01.05.2007)
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Journal Article
Salting-out assisted liquid/liquid extraction with acetonitrile: a new high throughput sample preparation technique for good laboratory practice bioanalysis using liquid chromatography-mass spectrometry
Zhang, Jun, Wu, Huaiqin, Kim, Elaine, El-Shourbagy, Tawakol A.
Published in Biomedical chromatography (01.04.2009)
Published in Biomedical chromatography (01.04.2009)
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Journal Article
A high-throughput, fully automated liquid/liquid extraction liquid chromatography/mass spectrometry method for the quantitation of a new investigational drug ABT-869 and its metabolite A-849529 in human plasma samples
Rodila, Ramona C., Kim, Joseph C., Ji, Qin C., El-Shourbagy, Tawakol A.
Published in Rapid communications in mass spectrometry (01.01.2006)
Published in Rapid communications in mass spectrometry (01.01.2006)
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Journal Article
A strategy for high-throughput analysis of levosimendan and its metabolites in human plasma samples using sequential negative and positive ionization liquid chromatography/tandem mass spectrometric detection
Zhang, Jun, Gage, Eric M., Ji, Qin C., El-Shourbagy, Tawakol A.
Published in Rapid communications in mass spectrometry (30.07.2007)
Published in Rapid communications in mass spectrometry (30.07.2007)
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Journal Article
Method development and validation for zotarolimus concentration determination in stented swine arteries by liquid chromatography/tandem mass spectrometry detection
Zhang, Jun, Todd Reimer, M., Alexander, Nicholas E., Ji, Qin. C., El-Shourbagy, Tawakol A.
Published in Rapid communications in mass spectrometry (01.01.2006)
Published in Rapid communications in mass spectrometry (01.01.2006)
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Journal Article
Simultaneous LC-MS/MS quantitation of a highly hydrophobic pharmaceutical compound and its metabolite in urine using online monolithic phase-based extraction
Xu, Raymond Naxing, Boyd, Brian, Rieser, Matthew J, El-Shourbagy, Tawakol A
Published in Journal of separation science (01.11.2007)
Published in Journal of separation science (01.11.2007)
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Simultaneous quantitation of dexmedetomidine and glucuronide metabolites (G-Dex-1 and G-Dex-2) in human plasma utilizing liquid chromatography with tandem mass spectrometric detection
Ji, Qin C., Zhou, Julie Y., Gonzales, R. John, Gage, Eric M., El-Shourbagy, Tawakol A.
Published in Rapid communications in mass spectrometry (01.01.2004)
Published in Rapid communications in mass spectrometry (01.01.2004)
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Journal Article
Simultaneous determination of a hydrophobic drug candidate and its metabolite in human plasma with salting-out assisted liquid/liquid extraction using a mass spectrometry friendly salt
Wu, Huaiqin, Zhang, Jun, Norem, Katherine, El-Shourbagy, Tawakol A.
Published in Journal of pharmaceutical and biomedical analysis (01.12.2008)
Published in Journal of pharmaceutical and biomedical analysis (01.12.2008)
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A novel approach for in-process monitoring and managing cross-contamination in a high-throughput high-performance liquid chromatography assay with tandem mass spectrometric detection
Chang, Min S., Kim, Elaine J., El-Shourbagy, Tawakol A.
Published in Rapid communications in mass spectrometry (01.01.2006)
Published in Rapid communications in mass spectrometry (01.01.2006)
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Journal Article
Rapid, simultaneous determination of lopinavir and ritonavir in human plasma by stacking protein precipitations and salting-out assisted liquid/liquid extraction, and ultrafast LC–MS/MS
Myasein, Francis, Kim, Elaine, Zhang, Jun, Wu, Huaiqin, El-Shourbagy, Tawakol A.
Published in Analytica chimica acta (28.09.2009)
Published in Analytica chimica acta (28.09.2009)
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A high-throughput liquid chromatography/tandem mass spectrometry method for simultaneous quantification of a hydrophobic drug candidate and its hydrophilic metabolite in human urine with a fully automated liquid/liquid extraction
Wang, Perry G., Zhang, Jun, Gage, Eric M., Schmidt, Jeffrey M., Rodila, Ramona C., Ji, Qin C., El-Shourbagy, Tawakol A.
Published in Rapid communications in mass spectrometry (01.01.2006)
Published in Rapid communications in mass spectrometry (01.01.2006)
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Journal Article
HPLC–MS/MS determination of a hardly soluble drug in human urine through drug–albumin binding assisted dissolution
Rodila, Ramona, Kim, Grace E., Fan, Leimin, Chang, Min S., Zhang, Jun, Wu, Huaiqin, El-Shourbagy, Tawakol A.
Published in Journal of chromatography. B, Analytical technologies in the biomedical and life sciences (01.09.2008)
Published in Journal of chromatography. B, Analytical technologies in the biomedical and life sciences (01.09.2008)
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Method development for the concentration determination of a protein in human plasma utilizing 96-well solid-phase extraction and liquid chromatography/tandem mass spectrometric detection
Ji, Qin C., Gage, Eric M., Rodila, Ramona, Chang, Min S., El-Shourbagy, Tawakol A.
Published in Rapid communications in mass spectrometry (01.01.2003)
Published in Rapid communications in mass spectrometry (01.01.2003)
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96-Well liquid–liquid extraction liquid chromatography-tandem mass spectrometry method for the quantitative determination of ABT-578 in human blood samples
Ji, Qin C, Todd Reimer, M, El-Shourbagy, Tawakol A
Published in Journal of chromatography. B, Analytical technologies in the biomedical and life sciences (05.06.2004)
Published in Journal of chromatography. B, Analytical technologies in the biomedical and life sciences (05.06.2004)
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LC-MS/MS determination of 2-(4-((2-(2S,5R)-2-Cyano-5-ethynyl-1-pyrrolidinyl)-2-oxoethylamino)-4-methyl-1-piperidinyl)-4-pyridinecarboxylic acid (ABT-279) in dog plasma with high-throughput protein precipitation sample preparation
Kim, Joseph, Flick, Jeanette, Reimer, Michael T., Rodila, Ramona, Wang, Perry G., Zhang, Jun, Ji, Qin C., El-Shourbagy, Tawakol A.
Published in Biomedical chromatography (01.11.2007)
Published in Biomedical chromatography (01.11.2007)
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Strategies for Developing Sensitive and Automated LC-MS/MS Assays of a Pharmaceutical Compound and Its Metabolite from Whole Blood Matrix
Xu, Raymond N, Polzin, Jill, Kranz, Michelle, Vaca, Phillip, Metchkarova, Maria, Rieser, Matthew J, El-Shourbagy, Tawakol A
Published in Pharmaceutics (30.04.2010)
Published in Pharmaceutics (30.04.2010)
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