Publications by authors named "Johanna E Camara"

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D
Demonstrating commutability of an existing certified reference material for use with an end-user measurement procedure that was not included in the original commutability assessment.
W Greg Miller, Liesbet Deprez, Sverre Sandberg, Jesper V Johansen, Neil Greenberg, Johanna E Camara

Clin Chim Acta· January 2026

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Commutability assessment of NIST SRM 3666 albumin and creatinine in frozen human urine among routine clinical laboratory measurement procedures.
Ashley Beasley-Green, Johanna E Camara, Elena S C Wood, N Alan Heckert, W Greg Miller

Clin Chim Acta· December 2025

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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.
Stephen A Wise, Étienne Cavalier, Pierre Lukas, Stéphanie Peeters, Caroline Le Goff, Johanna E Camara

Anal Bioanal Chem· May 2025

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Recommendations for assessing commutability of a replacement batch of a secondary calibrator certified reference material.
Liesbet Deprez, Jesper V Johansen, Thomas Keller, Jeffrey Budd, Neil Greenberg, Johanna E Camara

Clin Chim Acta· February 2025

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Feasibility of Metrological Traceability Implementation Using the Joint Committee on Traceability in Laboratory Medicine Database Entries Including the Fulfillment of "Fit-for-Purpose" Maximum Allowable Measurement Uncertainty.
Mauro Panteghini, Johanna E Camara, Vincent Delatour, Katleen Van Uytfanghe, Hubert W Vesper

Clin Chem· November 2024

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Bilirubin measurements in neonates: uniform neonatal treatment can only be achieved by improved standardization.
Christian V Hulzebos, Johanna E Camara, Miranda van Berkel, Vincent Delatour, Stanley F Lo

Clin Chem Lab Med· September 2024

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Evolution and impact of Standard Reference Materials (SRMs) for determining vitamin D metabolites.
Stephen A Wise, Adam J Kuszak, Johanna E Camara

Anal Bioanal Chem· April 2024

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Recommendations for Setting a Criterion and Assessing Commutability of Sample Materials Used in External Quality Assessment/Proficiency Testing Schemes.
Sverre Sandberg, Pernille Fauskanger, Jesper V Johansen, Thomas Keller, Jeffrey Budd, Johanna E Camara

Clin Chem· November 2023

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Recommendations for Setting a Criterion for Assessing Commutability of Secondary Calibrator Certified Reference Materials.
W Greg Miller, Thomas Keller, Jeffrey Budd, Jesper V Johansen, Mauro Panteghini, Johanna E Camara

Clin Chem· September 2023

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Determination of 24,25-dihydroxyvitamin D in Vitamin D External Quality Assessment Scheme samples using a reference measurement procedure.
Stephen A Wise, Grace Hahm, Carolyn Q Burdette, Susan S-C Tai, Johanna E Camara

J Steroid Biochem Mol Biol· July 2023

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Development of an improved standard reference material for folate vitamers in human serum.
Johanna E Camara, Jeanita S Pritchett, Yasmine C Daniels, Mary Bedner, Michael A Nelson

Anal Bioanal Chem· February 2023

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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 D on assay performance.
Stephen A Wise, Johanna E Camara, Carolyn Q Burdette, Grace Hahm, Federica Nalin

Anal Bioanal Chem· January 2022

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Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 2 ligand binding assays - impact of 25-hydroxyvitamin D and 24R,25-dihydroxyvitamin D on assay performance.
Stephen A Wise, Johanna E Camara, Carolyn Q Burdette, Grace Hahm, Federica Nalin

Anal Bioanal Chem· January 2022

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Assessment of serum total 25-hydroxyvitamin D assays for Vitamin D External Quality Assessment Scheme (DEQAS) materials distributed at ambient and frozen conditions.
Christopher T Sempos, Emma L Williams, Graham D Carter, Julia Jones, Johanna E Camara

Anal Bioanal Chem· January 2022

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Optimizing Available Tools for Achieving Result Standardization: Value Added by Joint Committee on Traceability in Laboratory Medicine (JCTLM).
Mauro Panteghini, Federica Braga, Johanna E Camara, Vincent Delatour, Katleen Van Uytfanghe

Clin Chem· November 2021

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Vitamin D Standardization Program (VDSP) intralaboratory study for the assessment of 25-hydroxyvitamin D assay variability and bias.
Stephen A Wise, Johanna E Camara, Christopher T Sempos, Pierre Lukas, Caroline Le Goff

J Steroid Biochem Mol Biol· September 2021

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Assessment of serum total 25-hydroxyvitamin D assay commutability of Standard Reference Materials and College of American Pathologists Accuracy-Based Vitamin D (ABVD) Scheme and Vitamin D External Quality Assessment Scheme (DEQAS) materials: Vitamin D Standardization Program (VDSP) Commutability Study 2.
Johanna E Camara, Stephen A Wise, Andrew N Hoofnagle, Emma L Williams, Graham D Carter

Anal Bioanal Chem· August 2021

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IFCC Working Group Recommendations for Correction of Bias Caused by Noncommutability of a Certified Reference Material Used in the Calibration Hierarchy of an End-User Measurement Procedure.
W Greg Miller, Jeffrey Budd, Neil Greenberg, Cas Weykamp, Harald Althaus, Johanna E Camara

Clin Chem· June 2020

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An updated protocol based on CLSI document C37 for preparation of off-the-clot serum from individual units for use alone or to prepare commutable pooled serum reference materials.
Uliana Danilenko, Hubert W Vesper, Gary L Myers, Patric A Clapshaw, Johanna E Camara

Clin Chem Lab Med· February 2020

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Enhancing the accuracy of measurement of small molecule organic biomarkers.
Tang Lin Teo, Katrice A Lippa, Lindsey Mackay, Sharon Yong, Qinde Liu, Johanna E Camara

Anal Bioanal Chem· November 2019

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IFCC Working Group Recommendations for Assessing Commutability Part 1: General Experimental Design.
W Greg Miller, Heinz Schimmel, Robert Rej, Neil Greenberg, Ferruccio Ceriotti, Johanna E Camara

Clin Chem· March 2018

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IFCC Working Group Recommendations for Assessing Commutability Part 3: Using the Calibration Effectiveness of a Reference Material.
Jeffrey R Budd, Cas Weykamp, Robert Rej, Finlay MacKenzie, Ferruccio Ceriotti, Johanna E Camara

Clin Chem· March 2018

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IFCC Working Group Recommendations for Assessing Commutability Part 2: Using the Difference in Bias between a Reference Material and Clinical Samples.
Göran Nilsson, Jeffrey R Budd, Neil Greenberg, Vincent Delatour, Robert Rej, Johanna E Camara

Clin Chem· March 2018

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Standard Reference Material (SRM) 2378 fatty acids in frozen human serum. Certification of a clinical SRM based on endogenous supplementation of polyunsaturated fatty acids.
Bruce A Benner, Michele M Schantz, Carissa D Powers, Rosemary L Schleicher, Johanna E Camara

Anal Bioanal Chem· March 2018

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Role of the National Institute of Standards and Technology (NIST) in Support of the Vitamin D Initiative of the National Institutes of Health, Office of Dietary Supplements.
Stephen A Wise, Susan S-C Tai, Carolyn Q Burdette, Johanna E Camara, Mary Bedner

J AOAC Int· September 2017

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