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 3 on assay performance.

Autor: Wise SA; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA. stephen.wise@nih.gov.; Scientist Emeritus, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA. stephen.wise@nih.gov., Camara JE; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Burdette CQ; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Hahm G; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Nalin F; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Kuszak AJ; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA., Merkel J; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA., Durazo-Arvizu RA; Biostatistics Core, The Sabin Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90027, USA., Williams EL; Imperial Healthcare NHS Trust, London, W6 8RF, UK., Hoofnagle AN; Department of Laboratory Medicine, University of Washington, Seattle, WA, 98185, USA., Ivison F; Central Manchester Foundation Trust, Manchester, M13 9WL, UK., Fischer R; Chromsystems Instruments & Chemicals GmbH, 82166, Gräfelfing, Germany., van den Ouweland JMW; Canisius Wilhelmina Hospital (CWZ), 6532, SZ, Nijmegen, The Netherlands., Ho CS; Biochemical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, 999077, Hong Kong., Law EWK; Biochemical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, 999077, Hong Kong., Simard JN; Endoceutics Inc., Québec, G1P 4P5, Canada., Gonthier R; Endoceutics Inc., Québec, G1P 4P5, Canada., Holmquist B; Endocrine Sciences, LabCorp Specialty Testing Group, Agoura Hills, CA, 91301, USA., Meadows S; Medical Research Council (MRC) Elsie Widdowson Laboratory (closed Dec. 2018), Cambridge, UK.; NIHR BRC Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, CB2 0SL, UK., Cox L; Medical Research Council (MRC) Elsie Widdowson Laboratory (closed Dec. 2018), Cambridge, UK.; NIHR BRC Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, CB2 0SL, UK., Robyak K; College of Medicine, Penn State University, Hershey, PA, 17033, USA., Creer MH; College of Medicine, Penn State University, Hershey, PA, 17033, USA., Fitzgerald R; Health Clinical Laboratories, University of California at San Diego, La Jolla, CA, 92093, USA., Clarke MW; Metabolomics Australia, Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Perth, WA, 6009, Australia., Breen N; Waters Technologies Ireland Ltd., Wexford, Y35 D431, Ireland., Lukas P; Clinical Chemistry, University of Liège, CHU de Liège, B-4000, Liège, Belgium., Cavalier É; Clinical Chemistry, University of Liège, CHU de Liège, B-4000, Liège, Belgium., Sempos CT; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.; Vitamin D Standardization Program LLC, Havre de Grace, MD, 217078, USA.

Publikováno v: Analytical and bioanalytical chemistry [Anal Bioanal Chem] 2022 Jan; Vol. 414 (1), pp. 333-349. Date of Electronic Publication: 2021 Aug 25.

Assessment of serum total 25-hydroxyvitamin D assays for Vitamin D External Quality Assessment Scheme (DEQAS) materials distributed at ambient and frozen conditions.

Autor: Sempos CT; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.; Vitamin D Standardization Program LLC, Havre de Grace, MD, 21078, USA., Williams EL; Imperial Healthcare NHS Trust, London, W6 8RF, UK., Carter GD; Imperial Healthcare NHS Trust, London, W6 8RF, UK., Jones J; Imperial Healthcare NHS Trust, London, W6 8RF, UK., Camara JE; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Burdette CQ; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Hahm G; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Nalin F; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Duewer DL; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Kuszak AJ; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA., Merkel J; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA., Hoofnagle AN; Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, 98185, USA., Lukas P; Clinical Chemistry, University of Liège, CHU de Liège, 4000, Liège, Belgium., Cavalier É; Clinical Chemistry, University of Liège, CHU de Liège, 4000, Liège, Belgium., Durazo-Arvizu RA; Biostatistics Core, The Sabin Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90027, USA., Crump PM; Computing and Biometry, University of Wisconsin-Madison, Madison, WI, 53706, USA., Popp C; Abbott Laboratories, ADD Wiesbaden Abbott GmbH, 65205, Wiesbaden, Germany., Beckert C; Abbott Laboratories, ADD Wiesbaden Abbott GmbH, 65205, Wiesbaden, Germany., Schultess J; Abbott Laboratories, ADD Wiesbaden Abbott GmbH, 65205, Wiesbaden, Germany., Van Slooten G; Awareness Technology, Inc., Palm City, FL, 34990, USA., Tourneur C; bioMérieux, 69280, Marcey-l'Étoile, France., Pease C; bioMérieux, 69280, Marcey-l'Étoile, France., Kaul R; Bio-Rad Laboratories, Clinical Diagnostics, Hercules, CA, 94547, USA., Villarreal A; Bio-Rad Laboratories, Clinical Diagnostics, Hercules, CA, 94547, USA., Ivison F; Central Manchester Foundation Trust, Manchester, M13 9WL, UK., Fischer R; Chromsystems Instruments & Chemicals GmbH, 82166, Gräfelfing, Germany., van den Ouweland JMW; Canisius Wilhelmina Hospital (CWZ), 6532 SZ, Nijmegen, The Netherlands., Ho CS; Biochemical Mass Spectrometry Unit, Department of Chemical Pathology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, 999077., Law EWK; Biochemical Mass Spectrometry Unit, Department of Chemical Pathology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, 999077., Simard JN; Endoceutics, Québec, G1P 4P5, Canada., Gonthier R; Endoceutics, Québec, G1P 4P5, Canada., Holmquist B; Endocrine Sciences, LabCorp Specialty Testing Group, Agoura Hills, CA, 91301, USA., Batista MC; Clinical Lab, Hospital Israelita Albert Einstein, São Paulo, 05652-900, Brazil., Meadows S; Medical Research Council (MRC) Elsie Widdowson Laboratory (Closed Dec. 2018), Cambridge, CB2 0SL, UK.; NIHR BRC Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, CB2 0SL, UK., Cox L; Medical Research Council (MRC) Elsie Widdowson Laboratory (Closed Dec. 2018), Cambridge, CB2 0SL, UK.; NIHR BRC Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, CB2 0SL, UK., Jansen E; National Institute of Public Health and the Environment (RIVM), 3720 BA, Bilthoven, The Netherlands., Khan DA; National University of Medical Sciences (NUMS), Rawalpindi, 46000, Punjab, Pakistan., Robyak K; College of Medicine, Penn State University, Hershey, PA, 17033, USA., Creer MH; College of Medicine, Penn State University, Hershey, PA, 17033, USA., Kilbane M; Clinical Chemistry, St. Vincent's University Hospital, Elm Park, Dublin 4, D04 T6F4, Ireland., Twomey PJ; Clinical Chemistry, St. Vincent's University Hospital, Elm Park, Dublin 4, D04 T6F4, Ireland., Freeman J; Siemens-Healthineers, Tarrytown, NY, 10591, USA., Parker N; Siemens-Healthineers, Tarrytown, NY, 10591, USA., Yuan J; SNIBE, Shenzhen, 518122, People's Republic of China., Fitzgerald R; Health Clinical Laboratories, University of California at San Diego, La Jolla, CA, 92093, USA., Mushtaq S; University of Chester, Chester, CH1 4BJ, UK., Clarke MW; Metabolomics Australia, Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Perth, WA, 6009, Australia., Breen N; Waters Technologies Ireland Ltd., Wexford, Y35 D431, Ireland., Simpson C; School of Medicine, Yale University, New Haven, CT, 06510, USA., Wise SA; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA. Stephen.wise@nih.gov.; Scientist Emeritus, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA. Stephen.wise@nih.gov.

Publikováno v: Analytical and bioanalytical chemistry [Anal Bioanal Chem] 2022 Jan; Vol. 414 (2), pp. 1015-1028. Date of Electronic Publication: 2021 Nov 09.

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.

Autor: Camara JE; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Wise SA; Scientist Emeritus, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA. stephen.wise@nih.gov.; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA. stephen.wise@nih.gov., Hoofnagle AN; Department of Laboratory Medicine, University of Washington, Seattle, WA, 98185, USA., Williams EL; Imperial Healthcare NHS Trust, London, W6 8RF, UK., Carter GD; Imperial Healthcare NHS Trust, London, W6 8RF, UK., Jones J; Imperial Healthcare NHS Trust, London, W6 8RF, UK., Burdette CQ; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Hahm G; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Nalin F; Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA., Kuszak AJ; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA., Merkel J; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA., Durazo-Arvizu RA; Biostatistics Core, The Sabin Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90027, USA., Lukas P; Clinical Chemistry, University of Liège, CHU de Liège, 4000, Liège, Belgium., Cavalier É; Clinical Chemistry, University of Liège, CHU de Liège, 4000, Liège, Belgium., Popp C; Abbott Laboratories, ADD Wiesbaden Abbott GmbH, 65205, Wiesbaden, Germany., Beckert C; Abbott Laboratories, ADD Wiesbaden Abbott GmbH, 65205, Wiesbaden, Germany., Schultess J; Abbott Laboratories, ADD Wiesbaden Abbott GmbH, 65205, Wiesbaden, Germany., Van Slooten G; Awareness Technology, Inc., Palm City, FL, 34990, USA., Tourneur C; bioMérieux, 69280, Marcy-l'Étoile, France., Pease C; bioMérieux, 69280, Marcy-l'Étoile, France., Kaul R; Clinical Diagnostics, Bio-Rad Laboratories, Clinical Diagnostics, Hercules, CA, 94547, USA., Villarreal A; Clinical Diagnostics, Bio-Rad Laboratories, Clinical Diagnostics, Hercules, CA, 94547, USA., Ivison F; Central Manchester Foundation Trust, Manchester, M13 9WL, UK., Fischer R; Chromsystems Instruments & Chemicals GmbH, 82166, Gräfelfing, Germany., van den Ouweland JMW; Canisius Wilhelmina Hospital (CWZ), 6532 SZ, Nijmegen, The Netherlands., Ho CS; Biomedical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, 999077, Hong Kong., Law EWK; Biomedical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, 999077, Hong Kong., Simard JN; Endoceutics Inc., Québec, G1P 4P5, Canada., Gonthier R; Endoceutics Inc., Québec, G1P 4P5, Canada., Holmquist B; LabCorp Specialty Testing Group, Endocrine Sciences, Agoura Hills, CA, 91301, USA., Batista MC; Clinical Lab, Hospital Israelita Albert Einstein, São Paulo, 05652-900, Brazil., Pham H; Immunodiagnostic Systems (IDS), Boldon, NE35 9PD, UK., Bennett A; Immunodiagnostic Systems (IDS), Boldon, NE35 9PD, UK., Meadows S; Medical Research Council (MRC) Elsie Widdowson Laboratory (closed Dec. 2018), Cambridge, CB2 0SL, UK.; NIHR BRC Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, CB2 0SL, UK., Cox L; Medical Research Council (MRC) Elsie Widdowson Laboratory (closed Dec. 2018), Cambridge, CB2 0SL, UK.; NIHR BRC Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, CB2 0SL, UK., Jansen E; National Institute of Public Health and the Environment (RIVM), 3720 BA, Bilthoven, The Netherlands., Khan DA; National University of Medical Sciences (NUMS), Rawalpindi, Punjab, 46000, Pakistan., Robyak K; College of Medicine, Penn State University, Hershey, PA, 17033, USA., Creer MH; College of Medicine, Penn State University, Hershey, PA, 17033, USA., Kilbane M; Clinical Chemistry, St. Vincent's University Hospital, Elm Park, Dublin 4, D04 T6F4, Ireland., Twomey PJ; Clinical Chemistry, St. Vincent's University Hospital, Elm Park, Dublin 4, D04 T6F4, Ireland., Freeman J; Siemens-Healthineers, Tarrytown, NY, 10591, USA., Parker N; Siemens-Healthineers, Tarrytown, NY, 10591, USA., Yuan J; SNIBE, Shenzhen, 518122, People's Republic of China., Fitzgerald R; University of California at San Diego, Health Clinical Laboratories, La Jolla, CA, 92093, USA., Mushtaq S; University of Chester, Chester, CH1 4BJ, UK., Clarke MW; Metabolomics Australia, Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Perth, WA, 6009, Australia., Breen N; Waters Technologies Ireland Ltd., Wexford, Y35 D431, Ireland., Simpson C; School of Medicine, Yale University, New Haven, CT, 06510, USA., Sempos CT; Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.; Vitamin D Standardization Program LLC, Havre de Grace, MD, 21078, USA.

Publikováno v: Analytical and bioanalytical chemistry [Anal Bioanal Chem] 2021 Aug; Vol. 413 (20), pp. 5067-5084. Date of Electronic Publication: 2021 Jun 28.

Development of a kelp powder (Thallus laminariae) Standard Reference Material.

Autor: Yu LL; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA. lee.yu@nist.gov., Browning JF; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Burdette CQ; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Caceres GC; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Chieh KD; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Davis WC; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Kassim BL; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Long SE; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Murphy KE; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Oflaz R; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Paul RL; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Sharpless KE; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Wood LJ; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Yen JH; Statistical Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Zeisler R; Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.

Publikováno v: Analytical and bioanalytical chemistry [Anal Bioanal Chem] 2018 Feb; Vol. 410 (4), pp. 1265-1278. Date of Electronic Publication: 2017 Dec 09.

Technical Note: Determination of Cholecalciferol (Vitamin D₃) in Standard Reference Material 3532 Calcium-Containing Solid Oral Dosage Form.

Autor: Burdette CQ; National Institute of Standards and Technology, 100 Bureau Dr, Gaithersburg, MD 20899.

Publikováno v: Journal of AOAC International [J AOAC Int] 2017 Sep 01; Vol. 100 (5), pp. 1304-1307. Date of Electronic Publication: 2017 May 11.