A candidate reference measurement procedure for quantifying serum concentrations of 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 using isotope-dilution liquid chromatography-tandem mass spectrometry

A candidate reference measurement procedure for Cyclosporine A in whole blood

(2014) Denis Grote-Koska et al.   ACCREDITATION AND QUALITY ASSURANCE

Evaluation of Vitamin D Standardization Program protocols for standardizing serum 25-hydroxyvitamin D data: a case study of the program's potential for national nutrition and health surveys

(2013) Kevin D Cashman et al.   AMERICAN JOURNAL OF CLINICAL NUTRITION

An assessment of 25-hydroxyvitamin D measurements in comparability studies conducted by the Vitamin D Metabolites Quality Assurance Program

(2013) Mary Bedner et al.   CLINICA CHIMICA ACTA

Isotope-Dilution Liquid Chromatography-Tandem Mass Spectrometry Candidate Reference Method for Total Testosterone in Human Serum

(2012) J. C. Botelho et al.   CLINICAL CHEMISTRY

Development and Certification of a Standard Reference Material for Vitamin D Metabolites in Human Serum

(2011) Karen W. Phinney et al.   ANALYTICAL CHEMISTRY

Isotope dilution ultra performance liquid chromatography-tandem mass spectrometry method for simultaneous measurement of 25-hydroxyvitamin D2, 25-hydroxyvitamin D3 and 3-epi-25-hydroxyvitamin D3 in human serum

(2011) Rosemary L. Schleicher et al.   CLINICA CHIMICA ACTA

Proposed Serum Cholesterol Reference Measurement Procedure by Gas Chromatography-Isotope Dilution Mass Spectrometry

(2011) S. H. Edwards et al.   CLINICAL CHEMISTRY

Candidate Reference Measurement Procedures for Serum 25-Hydroxyvitamin D3 and 25-Hydroxyvitamin D2 by Using Isotope-Dilution Liquid Chromatography-Tandem Mass Spectrometry

(2011) H. C. M. Stepman et al.   CLINICAL CHEMISTRY

Development of a Candidate Reference Measurement Procedure for the Determination of 25-Hydroxyvitamin D3and 25-Hydroxyvitamin D2in Human Serum Using Isotope-Dilution Liquid Chromatography−Tandem Mass Spectrometry

(2010) Susan S.-C. Tai et al.   ANALYTICAL CHEMISTRY

Standardization of testosterone measurements in humans

(2010) Hubert W. Vesper et al.   JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY

Measurement of 25-hydroxyvitamin D in the clinical laboratory: Current procedures, performance characteristics and limitations

(2010) A.M. Wallace et al.   STEROIDS

Specifications for trueness and precision of a reference measurement system for serum/plasma 25-hydroxyvitamin D analysis

(2009) Dietmar Stöckl et al.   CLINICA CHIMICA ACTA

Traceability in Laboratory Medicine

(2009) H. W. Vesper et al.   CLINICAL CHEMISTRY