Michael E Rybak

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Sociodemographic and Lifestyle Variables and Their Relationship to Nutritional Biomarkers : Findings from NHANES Sociodemographic and Lifestyle Variables Are Compound-and Class-Specific Correlates of Urine Phytoestrogen Concentrations in the U . S . Population 1 – 3

M. Sternberg, C. Pfeiffer, Michael E Rybak, 2013 .

Development of a Standard Reference Material for metabolomics research.

Catherine A Rimmer, Nien-Fan Zhang, Bryant C Nelson, 2013, Analytical chemistry.

Dietary supplement use and smoking are important correlates of biomarkers of water-soluble vitamin status after adjusting for sociodemographic and lifestyle variables in a representative sample of U.S. adults.

M. Sternberg, C. Pfeiffer, Michael E Rybak, 2013, The Journal of nutrition.

Direct Determination of Metals in Soils and Sediments by Induction Heating-Electrothermal Vaporization (IH-ETV) Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES)

E. Salin, Michael E Rybak, 2001 .

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.

J. Pirkle, M. Sternberg, C. Pfeiffer, 2013, The Journal of nutrition.

Environmental phenols and pubertal development in girls.

A. Calafat, G. Windham, L. Kushi, 2015, Environment international.

Evaluation of the efficacy, acceptability and palatability of calcium montmorillonite clay used to reduce aflatoxin B1 dietary exposure in a crossover study in Kenya

J. Montgomery, T. Phillips, E. Oyugi, 2017, Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment.

Human a fl atoxin exposure in Kenya , 2007 : a cross-sectional study

R. Breiman, J. Montgomery, R. Bunnell, 2013 .

Human aflatoxin exposure in Kenya, 2007: a cross-sectional study

R. Breiman, J. Montgomery, R. Bunnell, 2013, Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment.

Determination of Aflatoxin B1 in Smokeless Tobacco Products by Use of UHPLC-MS/MS.

Matthew R. Holman, Michael E Rybak, N. Zitomer, 2015, Journal of agricultural and food chemistry.

NTP-CERHR expert panel report on the developmental toxicity of soy infant formula.

J. Toppari, C. Chambers, R. Etzel, 2011, Birth defects research. Part B, Developmental and reproductive toxicology.

Sociodemographic and lifestyle variables are compound- and class-specific correlates of urine phytoestrogen concentrations in the U.S. population.

M. Sternberg, C. Pfeiffer, Michael E Rybak, 2013, The Journal of nutrition.

Phytoestrogen biomonitoring: an extractionless LC-MS/MS method for measuring urinary isoflavones and lignans by use of atmospheric pressure photoionization (APPI)

C. Pfeiffer, Michael E Rybak, D. Parker, 2011, Analytical and Bioanalytical Chemistry.

Determination of urinary phytoestrogens by HPLC-MS/MS: a comparison of atmospheric pressure chemical ionization (APCI) and electrospray ionization (ESI).

C. Pfeiffer, Michael E Rybak, D. Parker, 2008, Journal of chromatography. B, Analytical technologies in the biomedical and life sciences.

Investigation of Relationships between Urinary Biomarkers of Phytoestrogens, Phthalates, and Phenols and Pubertal Stages in Girls

R. Hiatt, A. Calafat, G. Windham, 2010, Environmental health perspectives.

Determination of urine caffeine and its metabolites by use of high-performance liquid chromatography-tandem mass spectrometry: estimating dietary caffeine exposure and metabolic phenotyping in population studies

C. Pfeiffer, Michael E Rybak, C. Pao, 2013, Analytical and Bioanalytical Chemistry.

Clinical analysis of vitamin B(6): determination of pyridoxal 5'-phosphate and 4-pyridoxic acid in human serum by reversed-phase high-performance liquid chromatography with chlorite postcolumn derivatization.

C. Pfeiffer, Michael E Rybak, 2004, Analytical biochemistry.

Assessing the Impacts of Preanalytical Field Sampling Challenges on the Reliability of Serum Aflatoxin B1-Lysine Measurements by Use of LC-MS/MS

Michael E Rybak, Maya R. Sternberg, N. Zitomer, 2022, Toxins.

Human aflatoxin exposure in Uganda: Estimates from a subset of the 2011 Uganda AIDS indicator survey (UAIS)

M. Sternberg, Michael E Rybak, E. Mbidde, 2020, Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment.

Clinical vitamin B6 analysis: an interlaboratory comparison of pyridoxal 5'-phosphate measurements in serum.

R. Jain, C. Pfeiffer, Michael E Rybak, 2005, Clinical chemistry.

Development and characterization of induction heating–electrothermal vaporization (IH-ETV) sample introduction for inductively coupled plasma spectrometry

E. Salin, Michael E Rybak, 2001 .

Quantitative determination of allicin in garlic: supercritical fluid extraction and standard addition of alliin.

J. Harnly, Michael E Rybak, E. M. Calvey, 2004, Journal of agricultural and food chemistry.

Caffeine Concentrations in Coffee, Tea, Chocolate, and Energy Drink Flavored E-liquids

L. Valentín-Blasini, C. Watson, Michael E Rybak, 2016, Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco.

Closed-system trapping method for the direct determination of transport efficiency in electrothermal vaporization sample introduction

E. Salin, Michael E Rybak, 2000 .

Associations of urinary phthalate and phenol biomarkers with menarche in a multiethnic cohort of young girls.

A. Calafat, G. Windham, L. Kushi, 2017, Reproductive toxicology.

Dietary flavonol intake is associated with age of puberty in a longitudinal cohort of girls.

G. Windham, L. Kushi, F. Biro, 2013, Nutrition research.

Urine excretion of caffeine and select caffeine metabolites is common in the U.S. population and associated with caffeine intake.

M. Sternberg, C. Pfeiffer, Michael E Rybak, 2015, The Journal of nutrition.

Caffeine intake in children in the United States and 10-y trends: 2001-2010.

Michael E Rybak, A. Moshfegh, N. Ahluwalia, 2014, The American journal of clinical nutrition.

Exposure to phytoestrogens in utero and age at menarche in a contemporary British cohort☆

K. Northstone, M. Marcus, T. Hartman, 2016, Environmental research.

Phenol Concentrations During Childhood and Subsequent Measures of Adiposity Among Young Girls

A. Deierlein, A. Calafat, G. Windham, 2017, American journal of epidemiology.

Higher urinary lignan concentrations in women but not men are positively associated with shorter time to pregnancy.

J. Maisog, S. Mumford, E. Schisterman, 2014, The Journal of nutrition.

A simplified protein precipitation and filtration procedure for determining serum vitamin B6 by high-performance liquid chromatography.

C. Pfeiffer, Michael E Rybak, 2009, Analytical biochemistry.

Evaluation of a 24-Hour Caffeine Intake Assessment Compared with Urinary Biomarkers of Caffeine Intake among Young Adults in Canada.

S. Kirkpatrick, D. Hammond, L. Vanderlee, 2018, Journal of the Academy of Nutrition and Dietetics.

Elimination of arcing in induction heating-electrothermal vaporization (IH-ETV) for sample introduction into inductively coupled plasmas

E. Salin, Michael E Rybak, J. Ren, 2003 .

Rapid determination of Cu, Fe, Mg, Mn and Zn in wood pulp by direct sample insertion-inductively coupled plasma-optical emission spectrometry using a pyrolytically coated graphite sample probe

E. Salin, Michael E Rybak, P. Hatsis, 1999 .

Pyrolytically coated graphite direct sample insertion probe for inductively coupled plasma spectrometry

E. Salin, Michael E Rybak, 1998 .

Associations of urinary phthalate and phenol biomarkers with menarche in a multiethnic cohort of young girls.

A. Calafat, G. Windham, L. Kushi, 2017, Reproductive toxicology.

Urinary phytoestrogen biomarkers in the U.S. population: findings from the National Health and Nutrition Examination Survey (NHANES 1999–2004)

R. Jain, C. Pfeiffer, Michael E Rybak, 2010 .