Zobrazeno 1 - 10
of 404
pro vyhledávání: '"Christopher T, Sempos"'
Autor:
Philip R. Fischer, Christopher T. Sempos, John M. Pettifor, David R. Fraser, Craig F. Munns, Ramon A. Durazo-Arvizu, Tom D. Thacher
Publikováno v:
The American Journal of Clinical Nutrition. 117:998-1004
Autor:
Martina Rabenberg, Christa Scheidt-Nave, Markus A. Busch, Michael Thamm, Nina Rieckmann, Ramón A. Durazo-Arvizu, Kirsten G. Dowling, Zuzana Škrabáková, Kevin D. Cashman, Christopher T. Sempos, Gert B. M. Mensink
Publikováno v:
BMC Public Health, Vol 18, Iss 1, Pp 1-14 (2018)
Abstract Background Comparability of 25-hydroxyvitamin D (25(OH)D) measurements is hampered by method-related differences in measurement values. International standardization of laboratory assays has been suggested to solve this problem. Methods As p
Externí odkaz:
https://doaj.org/article/07bfc153584f4575b3c37ff1f1028c6a
Autor:
A. V. Swan
Publikováno v:
Statistics in Medicine. 10:501-502
Autor:
Stephen A. Wise, Grace Hahm, Carolyn Q. Burdette, Susan S.-C. Tai, Johanna E. Camara, Christopher T. Sempos, Emma L. Williams
Publikováno v:
The Journal of Steroid Biochemistry and Molecular Biology. 231:106318
Autor:
Ravi Kaul, Robert L. Fitzgerald, Grace Hahm, Christine A. Simpson, Carole Tourneur, Sarah Meadows, Stephen A. Wise, Sohail Mushtaq, Graham D. Carter, Chung S Ho, Carolyn Q. Burdette, Jinyun Yuan, Christian Popp, Patrick J Twomey, Jan Schultess, Emma L Williams, Neil Parker, P.M. Crump, Christopher T. Sempos, David L. Duewer, Johanna E. Camara, Eugene Jansen, Fiona Ivison, J. Simard, Ramón A Durazo-Arvizu, Marcelo Cidade Batista, Michael H. Creer, Norma Breen, Etienne Cavalier, Emmett W K Law, Dilshad Ahmed Khan, Kimberly Robyak, Andrew N. Hoofnagle, Michael W. Clarke, Mark Kilbane, Camille Pease, Renaud Gonthier, Christian Beckert, Julia Jones, Ralf Fischer, Brett Holmquist, Lorna Cox, James Freeman, Federica Nalin, Adam J. Kuszak, Glen Van Slooten, Pierre Lukas, Joyce Merkel, Alfredo Villarreal, Jody M W van den Ouweland
Publikováno v:
Analytical and Bioanalytical Chemistry. 414:1015-1028
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 °
Autor:
Lorna Cox, Adam J. Kuszak, Carolyn Q. Burdette, Norma Breen, Sarah Meadows, Fiona Ivison, Andrew N. Hoofnagle, Renaud Gonthier, Etienne Cavalier, Brett Holmquist, Emma L Williams, Christopher T. Sempos, Jean Nicolas Simard, Ramón A Durazo-Arvizu, Stephen A. Wise, Jody M W van den Ouweland, Johanna E. Camara, Federica Nalin, Robert L. Fitzgerald, Pierre Lukas, Joyce Merkel, Ralf Fischer, Kimberly Robyak, Chung S Ho, Emmett W K Law, Michael H. Creer, Michael W. Clarke, Grace Hahm
Publikováno v:
Analytical and Bioanalytical Chemistry. 414:333-349
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-hydroxyvita
Autor:
Ravi Kaul, Carole Tourneur, Christopher T. Sempos, Christian Beckert, Dilshad Ahmed Khan, Marcelo Cidade Batista, Carolyn Q. Burdette, Grace Hahm, Mark Kilbane, Etienne Cavalier, Ramón A Durazo-Arvizu, Camille Pease, Christine A. Simpson, Alfredo Villarreal, Christian Popp, Heather Pham, Federica Nalin, Jan Schultess, Glen Van Slooten, Johanna E. Camara, Stephen A. Wise, Pierre Lukas, Alexander Bennett, Patrick J Twomey, Emma L Williams, Neil Parker, Adam J. Kuszak, Joyce Merkel, James Freeman, Eugene Jansen, Sohail Mushtaq
Publikováno v:
Anal Bioanal Chem
An interlaboratory comparison study was conducted by the Vitamin D Standardization Program (VDSP) to assess the performance of ligand binding assays (Part 2) for the determination of serum total 25-hydroxyvitamin D [25(OH)D]. Fifty single-donor sampl
Autor:
John M. Pettifor, Philip R. Fischer, Christopher T. Sempos, Tom D. Thacher, Craig F Munns, Ramón A Durazo-Arvizu
Publikováno v:
The American Journal of Clinical Nutrition. 114:231-237
BACKGROUND Nutritional rickets is believed to result from the interaction of inadequate serum 25-hydroxyvitamin D [25(OH)D] concentration and dietary calcium intake, but this interaction has not been confirmed in children with rickets. Determining th
Autor:
Christopher T. Sempos, Ernst Lindhout, Nicolas Heureux, Michel Hars, Damon A. Parkington, Emily Dennison, Ramón Durazo-Arvizu, Kerry S. Jones, Stephen A. Wise
The majority of circulating 25-hydroxyvitamin D (25(OH)D) is protein bound and perhaps less available than the free fraction of 25(OH)D; therefore, researchers have proposed that the measurement of free 25(OH)D in human serum may be a better indicato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa5a25776ed3e888d84b289dc2382a3d
Autor:
Mark Kilbane, Jan Schultess, Carolyn Q. Burdette, Camille Pease, Robert L. Fitzgerald, Graham D. Carter, Johanna E. Camara, Sarah Meadows, Ralf Fischer, Christian Beckert, Patrick J Twomey, Carole Tourneur, Lorna Cox, Fiona Ivison, Grace Hahm, Emma L Williams, J. Simard, Ravi Kaul, Jinyun Yuan, Federica Nalin, Eugene Jansen, Emmett W K Law, Pierre Lukas, Kimberly Robyak, Christian Popp, Heather Pham, Christopher T. Sempos, Alexander Bennett, Christine A. Simpson, Alfredo Villarreal, Etienne Cavalier, Renaud Gonthier, Julia Jones, Jody M W van den Ouweland, Brett Holmquist, Marcelo Cidade Batista, Chung S Ho, James Freeman, Glen Van Slooten, Michael H. Creer, Michael W. Clarke, Joyce Merkel, Dilshad Ahmed Khan, Andrew N. Hoofnagle, Adam J. Kuszak, Neil Parker, Norma Breen, Stephen A. Wise, Ramón A Durazo-Arvizu, Sohail Mushtaq
Publikováno v:
Anal Bioanal Chem
An interlaboratory study was conducted through the Vitamin D Standardization Program (VDSP) to assess commutability of Standard Reference Materials(®) (SRMs) and proficiency testing/external quality assessment (PT/EQA) samples for determination of s