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Soluble ST2 Is Associated With New Epileptiform Abnormalities Following Nontraumatic Subarachnoid Hemorrhage.

Lissak IA, Zafar SF, Westover MB, Schleicher RL, Kim JA, Leslie-Mazwi T, Stapleton CJ, Patel AB, Kimberly WT, Rosenthal ES.

Stroke. 2020 Apr;51(4):1128-1134. doi: 10.1161/STROKEAHA.119.028515. Epub 2020 Mar 11.


An HPLC Ultraviolet Method Using Low Sample Volume and Protein Precipitation for the Measurement of Retinol in Human Serum Suitable for Laboratories in Low- and Middle-Income Countries.

Chaudhary-Webb M, Schleicher RL, Erhardt JG, Pendergrast EC, Pfeiffer CM.

J Appl Lab Med. 2019 Jul;4(1):101-107. doi: 10.1373/jalm.2018.027508. Epub 2019 Mar 11.


Vitamin D status in the United States, 2011-2014.

Herrick KA, Storandt RJ, Afful J, Pfeiffer CM, Schleicher RL, Gahche JJ, Potischman N.

Am J Clin Nutr. 2019 Jul 1;110(1):150-157. doi: 10.1093/ajcn/nqz037.


Quality specifications and their daily application to evaluate the accuracy of reference measurements for serum concentrations of 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2.

Mineva EM, Sternberg MR, Pfeiffer CM, Momin SS, Maw KL, Schleicher RL.

Clin Chim Acta. 2018 Dec;487:241-249. doi: 10.1016/j.cca.2018.10.006. Epub 2018 Oct 4.


Global prevalence and disease burden of vitamin D deficiency: a roadmap for action in low- and middle-income countries.

Roth DE, Abrams SA, Aloia J, Bergeron G, Bourassa MW, Brown KH, Calvo MS, Cashman KD, Combs G, De-Regil LM, Jefferds ME, Jones KS, Kapner H, Martineau AR, Neufeld LM, Schleicher RL, Thacher TD, Whiting SJ.

Ann N Y Acad Sci. 2018 Oct;1430(1):44-79. doi: 10.1111/nyas.13968. Epub 2018 Sep 18.


Standard Reference Material (SRM) 2378 fatty acids in frozen human serum. Certification of a clinical SRM based on endogenous supplementation of polyunsaturated fatty acids.

Benner BA Jr, Schantz MM, Powers CD, Schleicher RL, Camara JE, Sharpless KE, Yen JH, Sniegoski LT.

Anal Bioanal Chem. 2018 Mar;410(9):2321-2329. doi: 10.1007/s00216-017-0841-5. Epub 2018 Feb 13.


Association of vitamin D intake and serum levels with fertility: results from the Lifestyle and Fertility Study.

Fung JL, Hartman TJ, Schleicher RL, Goldman MB.

Fertil Steril. 2017 Aug;108(2):302-311. doi: 10.1016/j.fertnstert.2017.05.037. Epub 2017 Jun 16.


Effects of preanalytical factors on hemoglobin measurement: A comparison of two HemoCue® point-of-care analyzers.

Whitehead RD Jr, Zhang M, Sternberg MR, Schleicher RL, Drammeh B, Mapango C, Pfeiffer CM.

Clin Biochem. 2017 Jun;50(9):513-520. doi: 10.1016/j.clinbiochem.2017.04.006. Epub 2017 Apr 12.


Development of an Improved Standard Reference Material for Vitamin D Metabolites in Human Serum.

Phinney KW, Tai SS, Bedner M, Camara JE, Chia RRC, Sander LC, Sharpless KE, Wise SA, Yen JH, Schleicher RL, Chaudhary-Webb M, Maw KL, Rahmani Y, Betz JM, Merkel J, Sempos CT, Coates PM, Durazo-Arvizu RA, Sarafin K, Brooks SPJ.

Anal Chem. 2017 May 2;89(9):4907-4913. doi: 10.1021/acs.analchem.6b05168. Epub 2017 Apr 13.


Challenges and Lessons Learned in Generating and Interpreting NHANES Nutritional Biomarker Data.

Pfeiffer CM, Lacher DA, Schleicher RL, Johnson CL, Yetley EA.

Adv Nutr. 2017 Mar 15;8(2):290-307. doi: 10.3945/an.116.014076. Print 2017 Mar. Review.


Interlaboratory analytical comparison of fatty acid concentrations in serum or plasma.

Schantz MM, Powers CD, Schleicher RL, Betz JM, Wise SA.

Clin Chim Acta. 2016 Nov 1;462:148-152. doi: 10.1016/j.cca.2016.09.013. Epub 2016 Sep 20.


The vitamin D status of the US population from 1988 to 2010 using standardized serum concentrations of 25-hydroxyvitamin D shows recent modest increases.

Schleicher RL, Sternberg MR, Lacher DA, Sempos CT, Looker AC, Durazo-Arvizu RA, Yetley EA, Chaudhary-Webb M, Maw KL, Pfeiffer CM, Johnson CL.

Am J Clin Nutr. 2016 Aug;104(2):454-61. doi: 10.3945/ajcn.115.127985. Epub 2016 Jul 6.


A Method-bridging Study for Serum 25-hydroxyvitamin D to Standardize Historical Radioimmunoassay Data to Liquid Chromatography-Tandem Mass Spectrometry.

Schleicher RL, Sternberg MR, Lacher DA, Sempos CT, Looker AC, Durazo-Arvizu RA, Yetley EA, Chaudhary-Webb M, Maw KL, Pfeiffer CM, Johnson C.

Natl Health Stat Report. 2016 Apr 25;(93):1-16.


National Estimates of Serum Total 25-Hydroxyvitamin D and Metabolite Concentrations Measured by Liquid Chromatography-Tandem Mass Spectrometry in the US Population during 2007-2010.

Schleicher RL, Sternberg MR, Looker AC, Yetley EA, Lacher DA, Sempos CT, Taylor CL, Durazo-Arvizu RA, Maw KL, Chaudhary-Webb M, Johnson CL, Pfeiffer CM.

J Nutr. 2016 May;146(5):1051-61. doi: 10.3945/jn.115.227728. Epub 2016 Apr 6.


A candidate reference measurement procedure for quantifying serum concentrations of 25-hydroxyvitamin D₃ and 25-hydroxyvitamin D₂ using isotope-dilution liquid chromatography-tandem mass spectrometry.

Mineva EM, Schleicher RL, Chaudhary-Webb M, Maw KL, Botelho JC, Vesper HW, Pfeiffer CM.

Anal Bioanal Chem. 2015 Jul;407(19):5615-24. doi: 10.1007/s00216-015-8733-z. Epub 2015 May 13.


Development of a Standard Reference Material for metabolomics research.

Phinney KW, Ballihaut G, Bedner M, Benford BS, Camara JE, Christopher SJ, Davis WC, Dodder NG, Eppe G, Lang BE, Long SE, Lowenthal MS, McGaw EA, Murphy KE, Nelson BC, Prendergast JL, Reiner JL, Rimmer CA, Sander LC, Schantz MM, Sharpless KE, Sniegoski LT, Tai SS, Thomas JB, Vetter TW, Welch MJ, Wise SA, Wood LJ, Guthrie WF, Hagwood CR, Leigh SD, Yen JH, Zhang NF, Chaudhary-Webb M, Chen H, Fazili Z, LaVoie DJ, McCoy LF, Momin SS, Paladugula N, Pendergrast EC, Pfeiffer CM, Powers CD, Rabinowitz D, Rybak ME, Schleicher RL, Toombs BM, Xu M, Zhang M, Castle AL.

Anal Chem. 2013 Dec 17;85(24):11732-8. doi: 10.1021/ac402689t. Epub 2013 Dec 3.


Planned variation in preanalytical conditions to evaluate biospecimen stability in the National Children's Study (NCS).

Mechanic L, Mendez A, Merrill L, Rogers J, Layton M, Todd D, Varanasi A, O'Brien B, Meyer Iii WA, Zhang M, Schleicher RL, Moye J.

Clin Chem Lab Med. 2013 Dec;51(12):2287-94. doi: 10.1515/cclm-2013-0454.


Changes in the concentrations of biochemical indicators of diet and nutritional status of pregnant women across pregnancy trimesters in Trujillo, Peru, 2004-2005.

Horton DK, Adetona O, Aguilar-Villalobos M, Cassidy BE, Pfeiffer CM, Schleicher RL, Caldwell KL, Needham LL, Rathbun SL, Vena JE, Naeher LP.

Nutr J. 2013 Jun 11;12:80. doi: 10.1186/1475-2891-12-80.


Is there a reverse J-shaped association between 25-hydroxyvitamin D and all-cause mortality? Results from the U.S. nationally representative NHANES.

Sempos CT, Durazo-Arvizu RA, Dawson-Hughes B, Yetley EA, Looker AC, Schleicher RL, Cao G, Burt V, Kramer H, Bailey RL, Dwyer JT, Zhang X, Gahche J, Coates PM, Picciano MF.

J Clin Endocrinol Metab. 2013 Jul;98(7):3001-9. doi: 10.1210/jc.2013-1333. Epub 2013 May 10.


Serum concentrations of an aflatoxin-albumin adduct in the National Health and Nutrition Examination Survey (NHANES) 1999-2000.

Schleicher RL, McCoy LF, Powers CD, Sternberg MR, Pfeiffer CM.

Clin Chim Acta. 2013 Aug 23;423:46-50. doi: 10.1016/j.cca.2013.04.011. Epub 2013 Apr 20.


Selected physiologic variables are weakly to moderately associated with 29 biomarkers of diet and nutrition, NHANES 2003-2006.

Haynes BM, Pfeiffer CM, Sternberg MR, Schleicher RL.

J Nutr. 2013 Jun;143(6):1001S-10S. doi: 10.3945/jn.112.172882. Epub 2013 Apr 17.


Regression modeling plan for 29 biochemical indicators of diet and nutrition measured in NHANES 2003-2006.

Sternberg MR, Schleicher RL, Pfeiffer CM.

J Nutr. 2013 Jun;143(6):948S-56S. doi: 10.3945/jn.112.172957. Epub 2013 Apr 17.


The CDC's Second National Report on Biochemical Indicators of Diet and Nutrition in the U.S. Population is a valuable tool for researchers and policy makers.

Pfeiffer CM, Sternberg MR, Schleicher RL, Haynes BM, Rybak ME, Pirkle JL.

J Nutr. 2013 Jun;143(6):938S-47S. doi: 10.3945/jn.112.172858. Epub 2013 Apr 17.


Race-ethnicity is a strong correlate of circulating fat-soluble nutrient concentrations in a representative sample of the U.S. population.

Schleicher RL, Sternberg MR, Pfeiffer CM.

J Nutr. 2013 Jun;143(6):966S-76S. doi: 10.3945/jn.112.172965. Epub 2013 Apr 17.


Assessing vitamin status in large population surveys by measuring biomarkers and dietary intake - two case studies: folate and vitamin D.

Pfeiffer CM, Schleicher RL, Johnson CL, Coates PM.

Food Nutr Res. 2012;56. doi: 10.3402/fnr.v56i0.5944. Epub 2012 Apr 2.


Development and certification of a standard reference material for vitamin D metabolites in human serum.

Phinney KW, Bedner M, Tai SS, Vamathevan VV, Sander LC, Sharpless KE, Wise SA, Yen JH, Schleicher RL, Chaudhary-Webb M, Pfeiffer CM, Betz JM, Coates PM, Picciano MF.

Anal Chem. 2012 Jan 17;84(2):956-62. doi: 10.1021/ac202047n. Epub 2011 Dec 28.


Isotope dilution ultra performance liquid chromatography-tandem mass spectrometry method for simultaneous measurement of 25-hydroxyvitamin D2, 25-hydroxyvitamin D3 and 3-epi-25-hydroxyvitamin D3 in human serum.

Schleicher RL, Encisco SE, Chaudhary-Webb M, Paliakov E, McCoy LF, Pfeiffer CM.

Clin Chim Acta. 2011 Aug 17;412(17-18):1594-9. doi: 10.1016/j.cca.2011.05.010. Epub 2011 May 13.


Vitamin D status: United States, 2001-2006.

Looker AC, Johnson CL, Lacher DA, Pfeiffer CM, Schleicher RL, Sempos CT.

NCHS Data Brief. 2011 Mar;(59):1-8.


Clinical applications for vitamin D assays: what is known and what is wished for.

Kleerekoper M, Schleicher RL, Eisman J, Bouillon R, Singh RJ, Holick MF.

Clin Chem. 2011 Sep;57(9):1227-32. doi: 10.1373/clinchem.2010.154997. Epub 2011 Apr 18. No abstract available.


NHANES monitoring of serum 25-hydroxyvitamin D: a roundtable summary.

Yetley EA, Pfeiffer CM, Schleicher RL, Phinney KW, Lacher DA, Christakos S, Eckfeldt JH, Fleet JC, Howard G, Hoofnagle AN, Hui SL, Lensmeyer GL, Massaro J, Peacock M, Rosner B, Wiebe D, Bailey RL, Coates PM, Looker AC, Sempos C, Johnson CL, Picciano MF; Vitamin D Roundtable on the NHANES Monitoring of Serum 25(OH)D: Assay Challenges and Options for Resolving Them.

J Nutr. 2010 Nov;140(11):2030S-45S. doi: 10.3945/jn.110.121483. Epub 2010 Sep 29.


25-hydroxyvitamin D status of healthy, low-income, minority children in Atlanta, Georgia.

Cole CR, Grant FK, Tangpricha V, Swaby-Ellis ED, Smith JL, Jacques A, Chen H, Schleicher RL, Ziegler TR.

Pediatrics. 2010 Apr;125(4):633-9. doi: 10.1542/peds.2009-1928. Epub 2010 Mar 29.


Serum vitamin C and the prevalence of vitamin C deficiency in the United States: 2003-2004 National Health and Nutrition Examination Survey (NHANES).

Schleicher RL, Carroll MD, Ford ES, Lacher DA.

Am J Clin Nutr. 2009 Nov;90(5):1252-63. doi: 10.3945/ajcn.2008.27016. Epub 2009 Aug 12.


Modulation of the effect of prenatal PAH exposure on PAH-DNA adducts in cord blood by plasma antioxidants.

Kelvin EA, Edwards S, Jedrychowski W, Schleicher RL, Camann D, Tang D, Perera FP.

Cancer Epidemiol Biomarkers Prev. 2009 Aug;18(8):2262-8. doi: 10.1158/1055-9965.EPI-09-0316.


Data advisory with regard to NHANES serum 25-hydroxyvitamin D data.

Looker AC, Lacher DA, Pfeiffer CM, Schleicher RL, Picciano MF, Yetley EA.

Am J Clin Nutr. 2009 Sep;90(3):695. doi: 10.3945/ajcn.2009.28175. Epub 2009 Jul 1. No abstract available.


Prospective analysis of serum carotenoids, vitamin A, and tocopherols in adults with short bowel syndrome undergoing intestinal rehabilitation.

Luo M, Estívariz CF, Schleicher RL, Bazargan N, Leader LM, Galloway JR, Ziegler TR.

Nutrition. 2009 Apr;25(4):400-7. doi: 10.1016/j.nut.2008.10.003. Epub 2008 Dec 10.


Serum 25-hydroxyvitamin D status of the US population: 1988-1994 compared with 2000-2004.

Looker AC, Pfeiffer CM, Lacher DA, Schleicher RL, Picciano MF, Yetley EA.

Am J Clin Nutr. 2008 Dec;88(6):1519-27. doi: 10.3945/ajcn.2008.26182.


Effects of delayed sample processing and freezing on serum concentrations of selected nutritional indicators.

Drammeh BS, Schleicher RL, Pfeiffer CM, Jain RB, Zhang M, Nguyen PH.

Clin Chem. 2008 Nov;54(11):1883-91. doi: 10.1373/clinchem.2008.108761. Epub 2008 Aug 29.


Human aflatoxin albumin adducts quantitatively compared by ELISA, HPLC with fluorescence detection, and HPLC with isotope dilution mass spectrometry.

McCoy LF, Scholl PF, Sutcliffe AE, Kieszak SM, Powers CD, Rogers HS, Gong YY, Groopman JD, Wild CP, Schleicher RL.

Cancer Epidemiol Biomarkers Prev. 2008 Jul;17(7):1653-7. doi: 10.1158/1055-9965.EPI-07-2780.


Oral supplementation of lutein/zeaxanthin and omega-3 long chain polyunsaturated fatty acids in persons aged 60 years or older, with or without AMD.

Huang LL, Coleman HR, Kim J, de Monasterio F, Wong WT, Schleicher RL, Ferris FL 3rd, Chew EY.

Invest Ophthalmol Vis Sci. 2008 Sep;49(9):3864-9. doi: 10.1167/iovs.07-1420. Epub 2008 Apr 30.


Multi-rule quality control for the age-related eye disease study.

Caudill SP, Schleicher RL, Pirkle JL.

Stat Med. 2008 Sep 10;27(20):4094-106. doi: 10.1002/sim.3222.


Measurement of 25-hydroxyvitamin D3 (25OHD3) and 25-hydroxyvitamin D2 (25OHD2) in human serum using liquid chromatography-tandem mass spectrometry and its comparison to a radioimmunoassay method.

Chen H, McCoy LF, Schleicher RL, Pfeiffer CM.

Clin Chim Acta. 2008 May;391(1-2):6-12. doi: 10.1016/j.cca.2008.01.017. Epub 2008 Jan 24.


The CDC VITAL-EQA program, external quality assurance for serum retinol, 2003-2006.

Haynes BM, Schleicher RL, Jain RB, Pfeiffer CM.

Clin Chim Acta. 2008 Apr;390(1-2):90-6. doi: 10.1016/j.cca.2008.01.009. Epub 2008 Jan 15.


Relation between prenatal lipid-soluble micronutrient status, environmental pollutant exposure, and birth outcomes.

Masters ET, Jedrychowski W, Schleicher RL, Tsai WY, Tu YH, Camann D, Tang D, Perera FP.

Am J Clin Nutr. 2007 Oct;86(4):1139-45.


Dose-ranging study of lutein supplementation in persons aged 60 years or older.

Rosenthal JM, Kim J, de Monasterio F, Thompson DJ, Bone RA, Landrum JT, de Moura FF, Khachik F, Chen H, Schleicher RL, Ferris FL 3rd, Chew EY.

Invest Ophthalmol Vis Sci. 2006 Dec;47(12):5227-33. Erratum in: Invest Ophthalmol Vis Sci. 2007 Jan;48(1):17. de Monastario, Francisco [corrected to de Monasterio, Francisco].


Distribution of serum concentrations of alpha-tocopherol and gamma-tocopherol in the US population.

Ford ES, Schleicher RL, Mokdad AH, Ajani UA, Liu S.

Am J Clin Nutr. 2006 Aug;84(2):375-83.


Analysis of aflatoxin B1-lysine adduct in serum using isotope-dilution liquid chromatography/tandem mass spectrometry.

McCoy LF, Scholl PF, Schleicher RL, Groopman JD, Powers CD, Pfeiffer CM.

Rapid Commun Mass Spectrom. 2005;19(16):2203-10.


Improved HPLC assay for measuring serum vitamin C with 1-methyluric acid used as an electrochemically active internal standard.

McCoy LF, Bowen MB, Xu M, Chen H, Schleicher RL.

Clin Chem. 2005 Jun;51(6):1062-4. Epub 2005 Apr 28. No abstract available.


The night vision threshold test is a better predictor of low serum vitamin A concentration than self-reported night blindness in pregnant urban Nepalese women.

Taren DL, Duncan B, Shrestha K, Shrestha N, Genaro-Wolf D, Schleicher RL, Pfeiffer CM, Sowell AL, Greivenkamp J, Canfield L.

J Nutr. 2004 Oct;134(10):2573-8.


Serum carotenoids and alpha-tocopherol and risk of nonmelanoma skin cancer.

Dorgan JF, Boakye NA, Fears TR, Schleicher RL, Helsel W, Anderson C, Robinson J, Guin JD, Lessin S, Ratnasinghe LD, Tangrea JA.

Cancer Epidemiol Biomarkers Prev. 2004 Aug;13(8):1276-82.

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