Publications by authors named "Christopher Sempos"

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Association of standardized serum 25-hydroxyvitamin D with falls in post-menopausal women.
Neil Binkley, Christopher T Sempos, Gretta Borchardt, Jennifer Larsen, Mark L Stacey

Osteoporos Int· February 2025

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Consensus Statement on Vitamin D Status Assessment and Supplementation: Whys, Whens, and Hows.
Andrea Giustina, John P Bilezikian, Robert A Adler, Giuseppe Banfi, Daniel D Bikle, Christopher T Sempos

Endocr Rev· September 2024

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Correction: Vitamin D status and supplementation before and after Bariatric Surgery: Recommendations based on a systematic review and meta‑analysis.
Andrea Giustina, Luigi di Filippo, Antonio Facciorusso, Robert A Adler, Neil Binkley, Christopher Sempos

Rev Endocr Metab Disord· April 2024

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Vitamin D status and supplementation before and after Bariatric Surgery: Recommendations based on a systematic review and meta-analysis.
Andrea Giustina, Luigi di Filippo, Antonio Facciorusso, Robert A Adler, Neil Binkley, Christopher Sempos

Rev Endocr Metab Disord· December 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, Christopher T Sempos

J Steroid Biochem Mol Biol· July 2023

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Serum 1,25-dihydroxyvitamin D levels in the diagnosis and pathogenesis of nutritional rickets - a multivariable re-analysis of a case-control study.
Philip R Fischer, Christopher T Sempos, John M Pettifor, David R Fraser, Craig F Munns

Am J Clin Nutr· May 2023

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Towards harmonization of directly measured free 25-hydroxyvitamin D using an enzyme-linked immunosorbent assay.
Christopher T Sempos, Ernst Lindhout, Nicolas Heureux, Michel Hars, Damon A Parkington

Anal Bioanal Chem· November 2022

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Intra-trial Mean 25(OH)D and PTH Levels and Risk of Falling in Older Men and Women in the Boston STOP IT Trial.
Bess Dawson-Hughes, Jifan Wang, Kathryn Barger, Heike A Bischoff-Ferrari, Christopher T Sempos

J Clin Endocrinol Metab· April 2022

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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, Christopher T Sempos

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, Christopher T Sempos

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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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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The Validity of Serum Alkaline Phosphatase to Identify Nutritional Rickets in Nigerian Children on a Calcium-Deprived Diet.
Tom D Thacher, Christopher T Sempos, Ramon A Durazo-Arvizu, Philip R Fischer, Craig F Munns

J Clin Endocrinol Metab· August 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, Christopher T Sempos

Anal Bioanal Chem· August 2021

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Serum 25-hydroxyvitamin D requirements to prevent nutritional rickets in Nigerian children on a low-calcium diet-a multivariable reanalysis.
Christopher T Sempos, Ramón A Durazo-Arvizu, Philip R Fischer, Craig F Munns, John M Pettifor

Am J Clin Nutr· July 2021

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Recommendations on the measurement and the clinical use of vitamin D metabolites and vitamin D binding protein - A position paper from the IFCC Committee on bone metabolism.
Konstantinos Makris, Harjit P Bhattoa, Etienne Cavalier, Karen Phinney, Christopher T Sempos

Clin Chim Acta· June 2021

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Adjusting Coronavirus Prevalence Estimates for Laboratory Test Kit Error.
Christopher T Sempos, Lu Tian

Am J Epidemiol· January 2021

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Controversies in Vitamin D: A Statement From the Third International Conference.
Andrea Giustina, Roger Bouillon, Neil Binkley, Christopher Sempos, Robert A Adler

JBMR Plus· December 2020

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The measurement of vitamin D metabolites: part I-metabolism of vitamin D and the measurement of 25-hydroxyvitamin D.
Konstantinos Makris, Christopher Sempos, Etienne Cavalier

Hormones (Athens)· June 2020

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The measurement of vitamin D metabolites part II-the measurement of the various vitamin D metabolites.
Konstantinos Makris, Christopher Sempos, Etienne Cavalier

Hormones (Athens)· June 2020

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Prevalence and Determinants of QuantiFERON-Diagnosed Tuberculosis Infection in 9810 Mongolian Schoolchildren.
Davaasambuu Ganmaa, Polyna Khudyakov, Uyanga Buyanjargal, Badamtsetseg Jargalsaikhan, Delgerekh Baigal, Christopher T Sempos

Clin Infect Dis· August 2019

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The Association between Cardiovascular Disease Risk Factors and 25-Hydroxivitamin D and Related Analytes among Hispanic/Latino Adults: A Pilot Study.
Ramon A Durazo-Arvizu, Reyna L Pacheco-Dominguez, Christopher T Sempos, Holly Kramer, Andrew N Hoofnagle

Nutrients· August 2019

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Controversies in Vitamin D: Summary Statement From an International Conference.
Andrea Giustina, Robert A Adler, Neil Binkley, Roger Bouillon, Peter R Ebeling, Christopher T Sempos

J Clin Endocrinol Metab· February 2019

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Effect of Genetically Low 25-Hydroxyvitamin D on Mortality Risk: Mendelian Randomization Analysis in 3 Large European Cohorts.
Thor Aspelund, Martin R Grübler, Albert V Smith, Elias F Gudmundsson, Martin Keppel, Christopher T Sempos

Nutrients· January 2019

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Implications of standardization of serum 25-hydroxyvitamin D data for the evaluation of vitamin D status in Germany, including a temporal analysis.
Martina Rabenberg, Christa Scheidt-Nave, Markus A Busch, Michael Thamm, Nina Rieckmann, Christopher T Sempos

BMC Public Health· July 2018

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