Advantages and challenges of mass spectrometry assays for steroid hormones FZ Stanczyk, NJ Clarke The Journal of steroid biochemistry and molecular biology 121 (3-5), 491-495, 2010 | 296 | 2010 |
Peer reviewed: systematic LC/MS metabolite identification in drug discovery NJ Clarke, D Rindgen, WA Korfmacher, KA Cox Analytical chemistry 73 (15), 430 A-439 A, 2001 | 246 | 2001 |
Recommendations for the generation, quantification, storage, and handling of peptides used for mass spectrometry–based assays AN Hoofnagle, JR Whiteaker, SA Carr, E Kuhn, T Liu, SA Massoni, ... Clinical chemistry 62 (1), 48-69, 2016 | 220 | 2016 |
Temporal relationship between vitamin D status and parathyroid hormone in the United States MH Kroll, C Bi, CC Garber, HW Kaufman, D Liu, A Caston-Balderrama, ... PloS one 10 (3), e0118108, 2015 | 205 | 2015 |
Interlaboratory comparison study of serum total testoserone measurements performed by mass spectrometry methods HW Vesper, S Bhasin, C Wang, SS Tai, LA Dodge, RJ Singh, J Nelson, ... Steroids 74 (6), 498-503, 2009 | 183 | 2009 |
Serum Concentrations of 1,25-Dihydroxyvitamin D2 and 1,25-Dihydroxyvitamin D3 in Response to Vitamin D2 and Vitamin D3 Supplementation RM Biancuzzo, N Clarke, RE Reitz, TG Travison, MF Holick The Journal of Clinical Endocrinology & Metabolism 98 (3), 973-979, 2013 | 149 | 2013 |
Validation of a total testosterone assay using high-turbulence liquid chromatography tandem mass spectrometry: total and free testosterone reference ranges WA Salameh, MM Redor-Goldman, NJ Clarke, RE Reitz, MP Caulfield Steroids 75 (2), 169-175, 2010 | 142 | 2010 |
Simultaneous measurement of thirteen steroid hormones in women with polycystic ovary syndrome and control women using liquid chromatography-tandem mass spectrometry CC Keefe, MM Goldman, K Zhang, N Clarke, RE Reitz, CK Welt PloS one 9 (4), e93805, 2014 | 112 | 2014 |
Scalable photonic crystal chips for high sensitivity protein detection F Liang, N Clarke, P Patel, M Loncar, Q Quan Optics Express 21 (26), 32306-32312, 2013 | 107 | 2013 |
Quantitative insulin analysis using liquid chromatography–tandem mass spectrometry in a high-throughput clinical laboratory Z Chen, MP Caulfield, MJ McPhaul, RE Reitz, SW Taylor, NJ Clarke Clinical chemistry 59 (9), 1349-1356, 2013 | 102 | 2013 |
Selective increase in cellular Aβ42 is related to apoptosis but not necrosis Y Ohyagi, T Yamada, K Nishioka, NJ Clarke, AJ Tomlinson, S Naylor, ... Neuroreport 11 (1), 167-171, 2000 | 99 | 2000 |
A novel mass spectrometry–based assay for the accurate measurement of thyroglobulin from patient samples containing antithyroglobulin autoantibodies NJ Clarke, Y Zhang, RE Reitz Journal of Investigative Medicine 60 (8), 1157-1163, 2012 | 97 | 2012 |
A novel and highly divergent homolog of human eosinophil granule major basic protein DA Plager, DA Loegering, DA Weiler, JL Checkel, JM Wagner, NJ Clarke, ... Journal of Biological Chemistry 274 (20), 14464-14473, 1999 | 89 | 1999 |
Methods for detecting vitamin D metabolites N Clarke, B Holmquist, KJ Lee, RE Reitz US Patent 7,745,226, 2010 | 83 | 2010 |
Clinical utility of insulin-like growth factor 1 and 2; determination by high resolution mass spectrometry C Bystrom, S Sheng, K Zhang, M Caulfield, NJ Clarke, R Reitz Public Library of Science 7 (9), e43457, 2012 | 81 | 2012 |
Measurement of estradiol—challenges ahead FZ Stanczyk, NJ Clarke The Journal of Clinical Endocrinology & Metabolism 99 (1), 56-58, 2014 | 78 | 2014 |
Narrow mass extraction of time-of-flight data for quantitative analysis of proteins: determination of insulin-like growth factor-1 CE Bystrom, S Sheng, NJ Clarke Analytical chemistry 83 (23), 9005-9010, 2011 | 76 | 2011 |
Plasma renin activity by LC-MS/MS: development of a prototypical clinical assay reveals a subpopulation of human plasma samples with substantial peptidase activity CE Bystrom, W Salameh, R Reitz, NJ Clarke Clinical chemistry 56 (10), 1561-1569, 2010 | 74 | 2010 |
Capillary isoelectric focusing of physiologically derived proteins with on-line desalting of isotonic salt concentrations NJ Clarke, AJ Tomlinson, G Schomburg, S Naylor Analytical chemistry 69 (14), 2786-2792, 1997 | 71 | 1997 |
A high-throughput mass spectrometry assay to simultaneously measure intact insulin and C-peptide SW Taylor, NJ Clarke, Z Chen, MJ McPhaul Clinica Chimica Acta 455, 202-208, 2016 | 67 | 2016 |