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Search Publications by: Carolyn Q. Burdette (Fed)

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Displaying 1 - 25 of 55

Commutability Assessment of New Standard Reference Materials (SRMs) for Determining Serum Total 25-Hydroxyvitamin D using Ligand Binding and Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS) Assays

January 10, 2025
Author(s)
Stephen Wise, Etienne Cavalier, Pierre LUKAS, Stephanie Peeters, caroline Le Goff, Laura Briggs, Emma Williams, Ekaterina Mineva, Christine Pfeiffer, Hubert Vesper, Christian Popp, Christian Beckert, Jan Schultess, Kevin Wang, Carole Tourneur, Camille Pease, Dominik Osterritter, Ralf Fischer, Ben Saida, Chao Dou, Satoshi Kojima, Hope Weiler, Agnieszka Bielecki, Heather Pham, Alexandra Bennett, Shawn You, Amit Ghoshal, Chistian Vogl, James Freeman, Neil Parker, Samantha Pagliaro, Jennifer Cheek, Jie Li, Hisao Tsukamoto, Karen Galvin, Kevin Cashman, Hsuan-Chieh Liao, Andrew Norbert Hoofnagle, Jeffery Budd, Adam Kuszak, Ashley Boggs-Russell, Carolyn Burdette, Grace Hahm, Federica Nalin, Johanna Camara
Commutability is where the measurement response for a reference material (RM) is the same as for an individual patient sample with the same concentration of analyte measured using two or more measurement systems. Assessment of commutability is essential

Per- and Polyfluoroalkyl Substances - Non-Targeted Analysis Interlaboratory Study Final Report

October 15, 2024
Author(s)
Benjamin Place, Jessica Reiner, Jared Ragland, Alix Rodowa, Carolyn Burdette, Amy Cuthbertson, Catherine Rimmer, John Kucklick, Nathan Mahynski
Non-targeted analysis (NTA) is a technique for the identification of unknown chemicals in complex materials, such as novel per- and polyfluoroalkyl substances (PFAS) in environmental materials and commercial formulations. The PFAS NTA Interlaboratory Study

Food Nutrition and Safety Measurements Quality Assurance Program: Exercise 2 Final Report

July 19, 2024
Author(s)
Melissa M. Phillips, Colleen E. Bryan Sallee, Carolyn Burdette, Steven J. Christopher
The Food Nutrition and Safety Measurements Quality Assurance Program (FNSQAP) was launched in 2021. FNSQAP was established to assist laboratories in the development and validation of new analytical methods, in improving the quality of their analytical

Certification of Standard Reference Material(R) 1955a Homocysteine in Frozen Human Serum

June 21, 2024
Author(s)
Carolyn Burdette, Elena Wood, Jerome Mulloor, Michael Nelson, Blaza Toman, Aaron Urbas
Standard Reference Material (SRM) 1955a Homocysteine in Frozen Human Serum is intended for use in validating homocysteine measurement procedures used by in vitro diagnostics manufacturers, reference laboratories, and clinical laboratories in the United

Dietary Supplement Laboratory Quality Assurance Program: Exercise 1 Final Report

November 1, 2023
Author(s)
Carolyn Burdette, Hugh Hayes, Jenna Klingsick, Colleen E. Bryan Sallee, Charles Barber, Steven J. Christopher, Lee L. Yu
The DSQAP was launched, in collaboration with the NIH ODS, in 2007. The program was established to enable laboratories to improve the accuracy of measurements in samples for nutrients, marker compounds, toxic elements, and/or contaminants in dietary

Food Nutrition and Safety Measurements Quality Assurance Program: Exercise 1 Final Report

May 18, 2023
Author(s)
Colleen E. Bryan Sallee, Melissa M. Phillips, Charles Barber, Carolyn Burdette, Laura Wood, Shaun Kotoski
The Food Nutrition and Safety Measurements Quality Assurance Program (FNSQAP) was launched in 2021. FNSQAP was established to assist laboratories in the development and validation of new analytical methods, in improving the quality of their analytical

Determination of 24,25-dihydroxyvitamin D3 in Vitamin D External Quality Assessment Scheme samples using a reference measurement procedure

May 9, 2023
Author(s)
Stephen Wise, Grace Hahm, Carolyn Burdette, Susan Tai, Johanna Camara, Adam Kuszak, Emma Williams
Ninety archived human serum samples from the Vitamin D External Quality Assessment Scheme (DEQAS) were analyzed using a reference measurement procedure (RMP) based on isotope dilution liquid chromatography - tandem mass spectrometry (ID LC-MS/MS) for the

Food Nutrition and Safety Measurements Quality Assurance Program: Exercise 1 Final Report

March 22, 2023
Author(s)
Colleen E. Bryan Sallee, Melissa M. Phillips, Charles Barber, Carolyn Burdette, Shaun Kotoski, Laura Wood
The Food Nutrition and Safety Measurements Quality Assurance Program (FNSQAP) was launched in 2021. FNSQAP was established to assist laboratories in the development and validation of new analytical methods, in improving the quality of their analytical

Cannabis Quality Assurance Program: Exercise 2 Toxic Elements Final Report

December 15, 2022
Author(s)
Chuck Barber, Colleen E. Bryan Sallee, Carolyn Burdette, Shaun Kotoski, Melissa M. Phillips, Walter Brent Wilson, Laura Wood
In 2020, NIST launched CannaQAP to improve the comparability of the analytical measurements of cannabis and cannabis-derived products in forensic and cannabis (hemp and marijuana) testing laboratories. CannaQAP is an interlaboratory study mechanism that is

Health Assessment Measurements Quality Assurance Program: Exercise 7 Final Report

December 5, 2022
Author(s)
Chuck Barber, Carolyn Burdette, Hugh Hayes, Monique Johnson, Shaun Kotoski, Jacolin Murray, Melissa M. Phillips, Kate Rimmer, Andrea Yarberry, Laura J. Wood
The 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

Cannabis Laboratory Quality Assurance Program: Exercise 2 Moisture Final Report

November 29, 2022
Author(s)
Chuck Barber, Colleen E. Bryan Sallee, Carolyn Burdette, Shaun Kotoski, Melissa M. Phillips, Walter Brent Wilson, Laura Wood
In 2020, NIST launched Cannabis Laboratory Quality Assurance Program (CannaQAP) to improve the comparability of the analytical measurements of cannabis and cannabis-derived products in forensic and cannabis (hemp and marijuana) testing laboratories

Assessment of Serum Total 25-Hydroxyvitamin D Assays for Vitamin D External Quality Assessment Scheme (DEQAS) Materials Distributed at Ambient and Frozen Conditions

November 9, 2021
Author(s)
Johanna Camara, Christopher T. Sempos, Emma L. Williams, Graham D. Carter, Julia C. Jones, Carolyn Burdette, Grace Hahm, Federica Nalin, David L. Duewer, Adam J. Kuszak, J. M. Betz, Andrew Hoofnagle, Pierre Lukas, E. Cavalier, Ramon Durazo-Arvizu, P. M. Crump, Christian Popp, Christian Beckert, Glen Van Slooten, Patrick Gradon, Joelle Morgand, Sarah Paul, Bruno Emanuelli, Angelo Maggio, Fiona Ivison, Ralf Fischer, Jody M. van den Ouweland, Chung S. Ho, Emmett W. Law, Jean-Nicolas Simard, Renaud Gonthier, Brett Holmquist, Manisha S. Patwardhan, Marcelo C. Batista, Heather Pham, Sarah Meadows, Eugene Jansen, Dilshad A. Khan, Kimberly Robyak, Mark Kilbane, Neil Parker, Vincent Chen, Robert Fitzgerald, Sohail Mushtaq, Michael W. Clarke, Norma Breen, Christine Simpson, Stephen A. Wise
The Vitamin D External Quality Assessment Scheme (DEQAS) distributes human serum samples four times per year to over 1000 participants worldwide for the determination of total serum 25-hydroxyvitamin D [25(OH)D)]. These samples are stored at −40 °C prior

Health Assessment Measurements Quality Assurance Program: Exercise 6 Final Report

September 20, 2021
Author(s)
Chuck Barber, Carolyn Burdette, Hugh Hayes, Monique Johnson, Shaun Kotoski, Jacolin Murray, Melissa M. Phillips, Kate Rimmer, Laura J. Wood, Andrea Yarberry
The 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

Interlaboratory Comparison of 25-Hydroxyvitamin D Assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 2 Immunoassays - Impact of 25 Hydroxyvitamin D2 and 24R,25-Dihydroxyvitamin D3 on Assay Performance

August 27, 2021
Author(s)
Stephen Wise, Johanna Camara, Carolyn Burdette, Grace Hahm, Federica Nalin, Adam Kuszak, Joyce Merkel, Ramon Durazo-Arvizu, Emma Williams, Christian Popp, Christian Beckert, Jan Schultess, Glen Van Slooten, Carole Tourneur, Camille Pease, Kavi Kaul, Alfredo Villarreal, Marcelo Batista, Heather Pham, Alex Bennett, Eugene Jansen, Dilshad Khan, Mark Kilbane, Patrick Twomey, James Freeman, Neil Parker, Sohail Mushtaq, Christine Simpson, Pierre Lukas, Etienne Cavalier, Christopher Sempos
An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of immunoassays (Part 2) for the determination of serum total 25 hydroxyvitamin D [25(OH)D]. A set of 50 single-donor samples was

Interlaboratory Comparison of 25-Hydroxyvitamin D Assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 1 Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS) Assays - Impact of 3-epi-25-Hydroxyvitamin D3

August 27, 2021
Author(s)
Stephen Wise, Johanna Camara, Carolyn Burdette, Grace Hahm, Federica Nalin, Adam Kuszak, Joyce Merkel, Ramon Durazo-Arvizu, Emma Walker, Andrew Hoofnagle, Fiona Ivison, Ralf Fischer, Jody van den Ouweland, Chung Ho, Emmet Law, Jean-Nicolas Simard, Renaud Gonthier, Brett Holmquist, Sarah Meadows, Lorna Cox, Kimberly Robyak, Michael Creer, Robert Fitzgerald, Michael Clarke, Norma Breen, Pierre Lukas, Etienne Cavalier, Christopher Sempos
An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of liquid chromatography – tandem mass spectrometry (LC-MS/MS) assays used for the determination of serum total 25-hydroxyvitamin D