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CLINICA CHIMICA ACTA (2021)
Differential diagnosis of vitamin D-related hypercalcemia using serum vitamin D metabolite profiling
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Simultaneous measurement of 25(OH)-vitamin D and 24,25(OH)2-vitamin D to define cut-offs for CYP24A1 mutation and vitamin D deficiency in a population of 1200 young subjects
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CLINICAL CHEMISTRY AND LABORATORY MEDICINE (2020)
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CLINICAL CHEMISTRY AND LABORATORY MEDICINE (2020)
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Iron status determination in individuals with Helicobacter pylori infection: conventional vs. new laboratory biomarkers
Dietmar Enko et al.
CLINICAL CHEMISTRY AND LABORATORY MEDICINE (2019)
External Quality Assessment of 24,25-dihydroxyvitamin D3 (24,25(OH)2D3) assays
G. D. Carter et al.
JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY (2019)
LC/MS analysis of vitamin D metabolites by dielectric barrier discharge ionization and a comparison with electrospray ionization and atmospheric pressure chemical ionization
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY (2018)
Analytical Methods for Quantification of Vitamin D and Implications for Research and Clinical Practice
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Hydroxyvitamin D assays: An historical perspective from DEQAS
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Baseline Assessment of 25-Hydroxyvitamin D Assay Performance: A Vitamin D Standardization Program (ASP) Interlaboratory Comparison Study
Stephen A. Wise et al.
JOURNAL OF AOAC INTERNATIONAL (2017)
Improved Screening Test for Idiopathic Infantile Hypercalcemia Confirms Residual Levels of Serum 24,25-(OH)2D3 in Affected Patients
Martin Kaufmann et al.
JOURNAL OF BONE AND MINERAL RESEARCH (2017)
Reference intervals for serum 24,25-dihydroxyvitamin D and the ratio with 25-hydroxyvitamin D established using a newly developed LC-MS/MS method
Jonathan C. Y. Tang et al.
JOURNAL OF NUTRITIONAL BIOCHEMISTRY (2017)
A fast and simple method for simultaneous measurements of 25(OH)D, 24, 25(OH)2D and the Vitamin D Metabolite Ratio (VMR) in serum samples by LC-MS/MS
Neus Fabregat-Cabello et al.
CLINICA CHIMICA ACTA (2017)
Development of an Improved Standard Reference Material for Vitamin D Metabolites in Human Serum
Karen W. Phinney et al.
ANALYTICAL CHEMISTRY (2017)
Simultaneous quantitative analysis of eight vitamin D analogues in milk using liquid chromatography-tandem mass spectrometry
Fabio P. Gomes et al.
ANALYTICA CHIMICA ACTA (2015)
Candidate Reference Measurement Procedure for the Determination of (24R),25-Dihydroxyvitamin D3 in Human Serum Using Isotope-Dilution Liquid Chromatography-Tandem Mass Spectrometry
Susan S-C. Tai et al.
ANALYTICAL CHEMISTRY (2015)
Differential extraction of endogenous and exogenous 25-OH-vitamin D from serum makes the accurate quantification in liquid chromatography-tandem mass spectrometry assays challenging
Ulrich Lankes et al.
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Dietrich A. Volmer et al.
MASS SPECTROMETRY REVIEWS (2015)
Clinical Utility of Simultaneous Quantitation of 25-Hydroxyvitamin D and 24,25-Dihydroxyvitamin D by LC-MS/MS Involving Derivatization With DMEQ-TAD
Martin Kaufmann et al.
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM (2014)
Characterizing Antibody Cross-reactivity for Immunoaffinity Purification of Analytes prior to Multiplexed Liquid Chromatography-Tandem Mass Spectrometry
Thomas J. Laha et al.
CLINICAL CHEMISTRY (2012)
The measurement of 25-hydroxy vitamin D - an analytical challenge
Markus Herrmann
CLINICAL CHEMISTRY AND LABORATORY MEDICINE (2012)
Genetic Defect in CYP24A1, the Vitamin D 24-Hydroxylase Gene, in a Patient with Severe Infantile Hypercalcemia
Andrew Dauber et al.
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM (2012)
A Simple, Rapid Atmospheric Pressure Chemical Ionization Liquid Chromatography Tandem Mass Spectrometry Method for the Determination of 25-Hydroxyvitamin D2 and D3
Uttam Garg et al.
JOURNAL OF CLINICAL LABORATORY ANALYSIS (2012)
The ratio of serum 24,25-dihydroxyvitamin D3 to 25-hydroxyvitamin D3 is predictive of 25-hydroxyvitamin D3 response to vitamin D3 supplementation
Dennis Wagner et al.
JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY (2011)
Mutations in CYP24A1 and Idiopathic Infantile Hypercalcemia
Karl P. Schlingmann et al.
NEW ENGLAND JOURNAL OF MEDICINE (2011)