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Displaying 1 - 25 of 99

Lessons From the NIST Micronutrients Quality Assurance Program for Vitamin C, 1993 to 2015: Sample Stability, Assay Reproducibility, and Use of Controls to Improve Comparability

November 11, 2020
Author(s)
David L. Duewer, Jeanice M. Brown Thomas, Katherine E. Sharpless, S A. Margolis
Vitamin C is a necessary micronutrient that is involved in many biological processes. In preserved human plasma and serum, vitamin C is most meaningfully analyzed as total ascorbic acid (TAA). From 1993 through 2015, the National Institute of Standards and

Health Assessment Measurements Quality Assurance Program: Exercise 2 Final Report

May 21, 2019
Author(s)
Charles A. Barber, Jeanice M. Brown Thomas, Carolyn Q. Burdette, Johanna Camara, Stephen E. Long, Melissa M. Phillips, Benjamin J. Place, Catherine A. Rimmer, Laura J. Wood, Lee L. Yu
The NIST Health Assessment Measurements Quality Assurance Program (HAMQAP) was launched in collaboration with the National Institutes of Health (NIH) Office of Dietary Supplements (ODS) in 2017. HAMQAP was established to enable laboratories to improve the

NIST Micronutrients Measurement Quality Assurance Program: 1984-1985 Comparability Studies Results for Round Robins I, II, III and V Fat Soluble Vitamins and Carotenoids in Human Serum

February 8, 2019
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Margaret C. Kline, William A. MacCrehan, Robert Paule, Reenie Parris, Willie May, Robert Schaffer
From 1984 to 2017, the National Institute of Standards and Technology (NIST) and its precursor the National Burearu of Standards (NBS) coordinated what became the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure

Health Assessment Measurements Quality Assurance Program: Exercise 1 Final Report

November 19, 2018
Author(s)
Chuck Barber, Bruce A. Benner Jr., Jeanice M. Brown Thomas, Carolyn Burdette, Johanna Camara, Stephen E. Long, Jacolin Murray, Melissa M. Phillips, Benjamin Place, Kate Rimmer, Laura J. Wood, Susan Tai, Siva K. Chinthalapati, Lee L. Yu
The NIST Health Assessment Measurements Quality Assurance Program (HAMQAP) was launched in collaboration with the National Institutes of Health (NIH) Office of Dietary Supplements (ODS) in 2017. HAMQAP was established to enable laboratories to improve the

NIST Micronutrients Measurement Quality Assurance Program: Spring and Fall 1986 Comparability Studies Results for Round Robins VII and VIII Fat Soluble Vitamins and Carotenoids in Human Serum

July 27, 2018
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Margaret C. Kline, Neal Craft, Fillmer Ruegg, Emil Schonberger, Robert Schaffer, Robert Paule
From 1984 to 2017, the National Institute of Standards and Technology coordinated the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat soluble vitamins and carotenoids in human serum and plasma. This report

NIST Micronutrients Measurement Quality Assurance Program: Spring and Fall 1987 Comparability Studies-Results for Round Robins IX and XI Fat-Soluble Vitamins and Carotenoids in Human Serum

May 21, 2018
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Margaret C. Kline, Willie May, Emil Schonberger
From 1984 to 2017, the National Institute of Standards and Technology coordinated the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- soluble vitamins and carotenoids in human serum and plasma. This report

NIST Micronutrients Measurement Quality Assurance Program Winter and Summer 2017 Comparability Studies: Results for Round Robins LXXXI and LXXXII Fat-Soluble Vitamins and Carotenoids in Human Serum

January 10, 2018
Author(s)
Jeanice M. Brown Thomas, David L. Duewer
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat-soluble vitamins and carotenoids in human serum and plasma. This report describes the design

NIST Micronutrients Measurement Quality Assurance Program Winter and Summer 2016 Comparability Studies: Results for Round Robin LXXIX and LXXX Fat-Soluble Vitamins and Carotenoids in Human Serum

March 16, 2017
Author(s)
Jeanice M. Brown Thomas, David L. Duewer
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat-soluble vitamins and carotenoids in human serum and plasma. This report describes the design

NIST Micronutrients Measurement Quality Assurance Program Analysis Tutorial

September 6, 2016
Author(s)
Katherine E. Sharpless, Jeanice M. Brown Thomas, David L. Duewer
Since 1984, the National Institute of Standards and Technology (NIST) has coordinated what is now known as the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat-soluble vitamins and carotenoids in human serum

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1988 Comparability Studies: Results for Round Robins XII, XIII, and XIV Fat-Soluble Vitamins and Carotenoids in Human Serum

August 29, 2016
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Margaret C. Kline, Willie E. May
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat-soluble vitamins and carotenoids in human serum and plasma. This report describes the design

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1989 Comparability Studies: Results for Round Robins XV, XVI, and XVII Fat-Soluble Vitamins and Carotenoids in Human Serum

August 29, 2016
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Margaret C. Kline, Willie E. May, Neal E. Craft
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat -soluble vitamins and carotenoids in human serum and plasma. This report describes the design

NIST Micronutrients Measurement Quality Assurance Program Summer 2015 Comparability Studies: Results for Round Robin LXXVIII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 43 Ascorbic Acid in Human Serum

July 28, 2016
Author(s)
Jeanice M. Brown Thomas, David L. Duewer
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter 2015 Comparability Studies: Results for Round Robin LXXVII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 42 Ascorbic Acid in Human Serum

July 28, 2016
Author(s)
Jeanice M. Brown Thomas, David L. Duewer
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program (Summer 2014 Comparability Studies): Results for Round Robin LXXVI Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 41 Ascorbic Acid in Human Serum

September 29, 2015
Author(s)
Jeanice M. Brown Thomas, David L. Duewer
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program (Winter 2014 Comparability Studies): Results for Round Robin LXXV Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 40 Ascorbic Acid in Human Serum

September 29, 2015
Author(s)
Jeanice M. Brown Thomas, David L. Duewer
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1990 Comparability Studies: Results for Round Robins XVIII, XIX, and XX Fat-Soluble Vitamins and Carotenoids in Human Serum

September 29, 2015
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Margaret C. Kline, Willie E. May, Sam A. Margolis, Neal E. Craft, Katherine E. Sharpless
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1991 Comparability Studies: Results for Round Robins XXI, XXII, and XXIII Fat-Soluble Vitamins and Carotenoids in Human Serum

September 29, 2015
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Margaret C. Kline, Katherine E. Sharpless, Willie E. May, Sam A. Margolis, Neal E. Craft
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1992 Comparability Studies: Results for Round Robins XXIV, XXV, and XXVI Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 3 Ascorbic Acid in Human Serum

December 19, 2014
Author(s)
Jeanice M. Brown Thomas, Neal E. Craft, David L. Duewer, Kline Margaret, Sam A. Margolis, Willie E. May, Katherine E. Sharpless
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1993 Comparability Studies: Results for Round Robins XXVII, XXVIII, and XXIX Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 4 Ascorbic Acid in Human Se

December 19, 2014
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Kline Margaret, Sam A. Margolis, Willie E. May, Katherine E. Sharpless
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Summer 2013 Comparability Studies: Results for Round Robin LXXIV Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 39 Ascorbic Acid in Human Serum

October 30, 2014
Author(s)
Jeanice M. Brown Thomas, David L. Duewer
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter 2013 Comparability Studies: Results for Round Robin LXXIII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 38 Ascorbic Acid in Human Serum

October 30, 2014
Author(s)
Jeanice M. Brown Thomas, David L. Duewer
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1994 Comparability Studies: Results for Round Robins XXX, XXXI, and XXXII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robins 5 and 6 Ascorbic Acid in Huma

October 30, 2014
Author(s)
Jeanice M. Brown Thomas, Margaret C. Kline, Katherine E. Sharpless, S A. Margolis
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1995 Comparability Studies: Results for Round Robins XXXIII, XXXIV, and XXXV Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robins 7 and 8 Ascorbic Acid in H

April 25, 2014
Author(s)
David L. Duewer, Margaret C. Kline, Katherine E. Sharpless, Jeanice M. Brown Thomas, Sam A. Margolis
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

Development of a Standard Reference Material for Metabolomics Research

November 4, 2013
Author(s)
Karen W. Phinney, Guillaume Ballihaut, Mary Bedner, Johanna Camara, Steven J. Christopher, William C. Davis, Nathan G. Dodder, Brian E. Lang, Stephen E. Long, Mark S. Lowenthal, Elizabeth A. McGaw, Karen E. Murphy, Bryant C. Nelson, Jocelyn L. Prendergast, Jessica L. Reiner, Catherine A. Rimmer, Lane C. Sander, Michele M. Schantz, Katherine E. Sharpless, Lorna T. Sniegoski, Susan S. Tai, Jeanice M. Brown Thomas, Thomas W. Vetter, Michael J. Welch, Stephen A. Wise, Laura J. Wood, William F. Guthrie, Robert C. Hagwood, Stefan D. Leigh, James H. Yen, Nien F. Zhang, Madhu Chaurhary-Webb, Huiping Chen, Bridgette Haynes, Donna J. LaVoie, Leslie F. McCoy, Shahzad S. Momin, Neelima Paladugula, Elizabeth C. Pendergrast, Christine M. Pfeiffer, Carissa D. Powers, Zia Fazili-Qari, Daniel Rabinowitz, Michael E. Rybak, Rosemary L. Schleicher, Mary Xu, Mindy Zhang, Arthur L. Castle, Brandi S. Benford, Gauthier Eppe