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Overestimation of 25-hydroxyvitamin D3 by increased ionisation efficiency of 3-epi-25-hydroxyvitamin D3 in LC-MS/MS methods not separating both metabolites as determined by an LC-MS/MS method for separate quantification of 25-hydroxyvitamin D3, 3-epi-25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 in human serum
Johannes M. W. van den Ouweland et al.
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES (2014)
Development of a sensitive LC/MS/MS method for vitamin D metabolites: 1,25 Dihydroxyvitamin D2&3 measurement using a novel derivatization agent
Curtis J. Hedman et al.
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES (2014)
Exploring the Role of Vitamin D in Type 1 Diabetes, Rheumatoid Arthritis, and Alzheimer Disease: New Insights From Accurate Analysis of 10 Forms
Iltaf Shah et al.
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM (2014)
Measurements of 25-Hydroxyvitamin D Concentrations in Archived Dried Blood Spots Are Reliable and Accurately Reflect Those in Plasma
Alicia K. Heath et al.
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM (2014)
HOLLOW FIBER-BASED LIQUID PHASE MICROEXTRACTION COUPLED WITH HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY FOR EXTRACTION AND DETERMINATION OF VITAMIN D3 IN BIOLOGICAL FLUIDS
M. Saber-Tehrani et al.
JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES (2014)
A new approach to measuring vitamin D in human adipose tissue using time-of-flight secondary ion mass spectrometry: A pilot study
Per Malmberg et al.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY (2014)
Quantification of physiological levels of vitamin D3 and 25-hydroxyvitamin D3 in porcine fat and liver in subgram sample sizes
Anders Burild et al.
JOURNAL OF SEPARATION SCIENCE (2014)
The estimation of calibration equations for variables with heteroscedastic measurement errors
Lu Tian et al.
STATISTICS IN MEDICINE (2014)
Enhanced 3-epi-25-hydroxyvitamin D3 signal leads to overestimation of its concentration and amplifies interference in 25-hydroxyvitamin D LC-MS/MS assays
N. Flynn et al.
ANNALS OF CLINICAL BIOCHEMISTRY (2014)
Characterization of Vitamin D Production by Human Ocular Barrier Cells
Jawaher A. Alsalem et al.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE (2014)
Simple, Miniaturized Blood Plasma Extraction Method
Jin-Hee Kim et al.
ANALYTICAL CHEMISTRY (2013)
Analytical measurement of serum 25-OH-vitamin D3, 25-OH-vitamin D2 and their C3-epimers by LC-MS/MS in infant and pediatric specimens
Mehrdad Yazdanpanah et al.
CLINICAL BIOCHEMISTRY (2013)
Analytical measurement and clinical relevance of vitamin D3 C3-epimer
Dana Bailey et al.
CLINICAL BIOCHEMISTRY (2013)
Vitamin D and 25-hydroxyvitamin D determination in meats by LC-IT-MS
Norbert Strobel et al.
FOOD CHEMISTRY (2013)
Quantification of vitamin D and 25-hydroxyvitamin D in soft tissues by liquid chromatography-tandem mass spectrometry
Tristan E. Lipkie et al.
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES (2013)
The Role of the Parent Compound Vitamin D with Respect to Metabolism and Function: Why Clinical Dose Intervals Can Affect Clinical Outcomes
Bruce W. Hollis et al.
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM (2013)
Vitamin D in chronic liver disease
Caroline S. Stokes et al.
LIVER INTERNATIONAL (2013)
Vitamin D-Binding Protein and Vitamin D Status of Black Americans and White Americans
Camille E. Powe et al.
NEW ENGLAND JOURNAL OF MEDICINE (2013)
Analysis and quantification of vitamin D metabolites in serum by ultra-performance liquid chromatography coupled to tandem mass spectrometry and high-resolution mass spectrometry - a method comparison and validation
Stephen J. Bruce et al.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY (2013)
A novel Cookson-type reagent for enhancing sensitivity and specificity in assessment of infant vitamin D status using liquid chromatography/tandem mass spectrometry
Shoujiro Ogawa et al.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY (2013)
Vitamin D and metabolites measurement by tandem mass spectrometry
Johannes M. W. van den Ouweland et al.
REVIEWS IN ENDOCRINE & METABOLIC DISORDERS (2013)
Overestimation of salivary 25-hydroxyvitamin D3 level when using stimulated saliva with gum-chewing
Tatsuya Higashi et al.
STEROIDS (2013)
Dispersive liquid-liquid microextraction for the determination of vitamins D and K in foods by liquid chromatography with diode-array and atmospheric pressure chemical ionization-mass spectrometry detection
Pilar Vinas et al.
TALANTA (2013)
Does Vitamin D Sufficiency Equate to a Single Serum 25-Hydroxyvitamin D Level or Are Different Levels Required for Non-Skeletal Diseases?
Simon Spedding et al.
NUTRIENTS (2013)
Association between Subcutaneous White Adipose Tissue and Serum 25-Hydroxyvitamin D in Overweight and Obese Adults
Brian D. Piccolo et al.
NUTRIENTS (2013)
Vitamin D: Deficiency, Sufficiency and Toxicity
Fahad Alshahrani et al.
NUTRIENTS (2013)
Vitamin D in plants: a review of occurrence, analysis, and biosynthesis
Rie B. Japelt et al.
FRONTIERS IN PLANT SCIENCE (2013)
Development and Certification of a Standard Reference Material for Vitamin D Metabolites in Human Serum
Karen W. Phinney et al.
ANALYTICAL CHEMISTRY (2012)
Society of Hair Testing guidelines for drug testing in hair
Gail A. A. Cooper et al.
FORENSIC SCIENCE INTERNATIONAL (2012)
An Inducible Cytochrome P450 3A4-Dependent Vitamin D Catabolic Pathway
Zhican Wang et al.
MOLECULAR PHARMACOLOGY (2012)
Evaluation, Treatment, and Prevention of Vitamin D Deficiency: an Endocrine Society Clinical Practice Guideline
Michael F. Holick et al.
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM (2011)
Development and optimization of an LC-MS/MS-based method for simultaneous quantification of vitamin D-2, vitamin D-3, 25-hydroxyvitamin D-2 and 25-hydroxyvitamin D-3
Jiri Adamec et al.
JOURNAL OF SEPARATION SCIENCE (2011)
A specific LC/ESI-MS/MS method for determination of 25-hydroxyvitamin D3 in neonatal dried blood spots containing a potential interfering metabolite, 3-epi-25-hydroxyvitamin D3
Tatsuya Higashi et al.
JOURNAL OF SEPARATION SCIENCE (2011)
Misleading measures in Vitamin D analysis: A novel LC-MS/MS assay to account for epimers and isobars
Iltaf Shah et al.
NUTRITION JOURNAL (2011)
Quantitative determination of vitamin D metabolites in plasma using UHPLC-MS/MS
Shujing Ding et al.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY (2010)
Rapid determination of 25-hydroxy vitamin D3 in swine tissue using an isotope dilution HPLC-MS assay
Ulrich Hoeller et al.
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES (2010)
Development of magnetic octadecylsilane particles as solid-phase extraction adsorbent for the determination of fat-soluble vitamins in fruit juice-milk beverage by capillary liquid chromatography
Chaofan Hu et al.
JOURNAL OF SEPARATION SCIENCE (2010)
The utility of neonatal dried blood spots for the assessment of neonatal vitamin D status
Darryl W. Eyles et al.
PAEDIATRIC AND PERINATAL EPIDEMIOLOGY (2010)
Dielectric Barrier Discharge Ionization for Liquid Chromatography/Mass Spectrometry
Heiko Hayen et al.
ANALYTICAL CHEMISTRY (2009)
A sensitive LC/MS/MS assay of 250H vitamin D3 and 250H vitamin D2 in dried blood spots
Darryl Eyles et al.
CLINICA CHIMICA ACTA (2009)
Vitamin D: Physiology and pathophysiology
Maurizio Gallieni et al.
INTERNATIONAL JOURNAL OF ARTIFICIAL ORGANS (2009)
25-Hydroxyvitamin D in cerebrospinal fluid during relapse and remission of multiple sclerosis
Trygve Holmoy et al.
MULTIPLE SCLEROSIS (2009)
High-Resolution Mass Spectrometers
Alan G. Marshall et al.
ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (2008)
Liquid chromatography-tandem mass spectrometric method for the determination of salivary 25-hydroxyvitamin D3:: a noninvasive tool for the assessment of vitamin D status
Tatsuya Higashi et al.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY (2008)
Comparison of MALDI to ESI on a triple quadrupole platform for pharmacokinetic analyses
Dietrich A. Volmer et al.
ANALYTICAL CHEMISTRY (2007)
Vitamin D deficiency
Michael F. Holick
NEW ENGLAND JOURNAL OF MEDICINE (2007)
C-3 epimers can account for a significant proportion of total circulating 25-hydroxyvitamin D in infants, complicating accurate measurement and interpretation of vitamin D status
Ravinder J. Singh et al.
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM (2006)
Ferrocene-based Diels-Alder derivatization for the determination of 1α-hydroxyvitamin D3 in rat plasma by high-performance liquid chromatography-electrospray tandem mass spectrometry
N Murao et al.
ANALYTICAL BIOCHEMISTRY (2005)
The relationship between vitamin D and parathyroid hormone: calcium homeostasis, bone turnover, and bone mineral density in postmenopausal women with established osteoporosis
O Sahota et al.
BONE (2004)
Application of 4-(4-nitrophenyl)-1,2,4-triazoline-3,5-(dione to analysis of 25-hydroxyvitamin D3 in human plasma by liquid chromatography/electron capture atmospheric pressure chemical ionization-mass spectrometry
T Higashi et al.
ANALYTICAL SCIENCES (2003)
Vitamin D: A millenium perspective
MF Holick
JOURNAL OF CELLULAR BIOCHEMISTRY (2003)
Characterization of urinary metabolites of vitamin D3 in man under physiological conditions using liquid chromatography-tandem mass spectrometry
T Higashi et al.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS (2002)
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