NOV 09, 2017 10:30 AM PST

The Need for Serum 25-hydroxyvitamin D Standardization in Clinical and Research Laboratories

Speaker
  • Coordinator, Vitamin D Standardization Program (VDSP), NIH Office of Dietary Supplements
    Biography
      Christopher T. Sempos, Ph.D., a Nutritional Epidemiologist and Program Director for the Population Studies Program in the NIH Office of Dietary Supplements (ODS) since 2008, retired in July 2015 after more than 27 years of federal government service. Dr. Sempos is now a part-time consultant with ODS who is continuing to serve as coordinator of the Vitamin D Standardization Program (VDSP). VDSP is an international collaborative effort to standardize the laboratory measurement of vitamin D status.

      Dr. Sempos's research areas are in nutritional epidemiology, especially cardiovascular and alcohol epidemiology, nutrition monitoring and public health surveillance methods, dietary survey methods, and biostatistics. Since coming to ODS, his research has focused serum 25-hydroxyvitamin D. The author of more than 100 professional and technical papers, he is also the co-author of the textbook,Statistical Methods in Epidemiology. His work has included numerous papers using data from NHANES including research on iron as a risk factor for heart disease, and national trends in diet and biomarkers of diet.

      Dr. Sempos received his Ph.D. in Nutritional Sciences from the University of Wisconsin-Madison in 1982. At the same time he earned an M.S. in Preventive Medicine-Epidemiology. He completed an NIH postdoctoral fellowship in Biostatistics, Nutrition, Preventive Cardiology and Cardiovascular Epidemiology at the Northwestern University Medical School, Department of Community Health and Preventive Medicine in Chicago, IL, and a postdoctoral fellowship with the U.S. Food and Drug Administration (FDA). From 1999-2004, he was Professor of Epidemiology and Director of Graduate Studies in the Department of Social and Preventive Medicine, University of Buffalo. He also worked in several positions within the Public Health Service from 1983-1999, most notably as Chief, Longitudinal Studies for the Division of Health and Nutrition Examination Surveys (DHANES) at the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention (CDC).

    Abstract

    This webinar builds and expands on the recent labroots webinar by Dr. Gary Horowitz to emphasize how relatively in expensive assay standardization procedures can be incorporated into clinical and research laboratories.  Serum 25-hydroxyvitamin D [25(OH)D] is a very difficult metabolite to measure.   Assay variation continues to confound the clinical assessment of vitamin D deficiency. The Vitamin D Standardization Program (VDSP) was founded in 2010 by the NIH Office of Dietary Supplements in collaboration with organization and researchers around the world to promote the standardized laboratory measurement of 25(OH)D.  In this webinar, we will discuss the (1) meaning of assay standardization, (2) VDSP Reference Measurement System; (3) Cost-effective Steps to Standardize 25(OH)D Measurement; (4) VDSP Performance Guidelines – A Weakness; and (5) Emerging vitamin D standardization issues.


    Show Resources
    You May Also Like
    MAY 11, 2021 10:00 AM PDT
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    C.E. CREDITS
    MAY 11, 2021 10:00 AM PDT
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    Date: May 11, 2021 Time: 10:00zm PDT Your samples are some of the most valuable assets in the laboratory. After spending countless hours on extraction and preparation, your conclusions could...
    APR 01, 2021 8:00 AM PDT
    C.E. CREDITS
    APR 01, 2021 8:00 AM PDT
    Date: April 01, 2021 Time: 8:00am (PST), 11:00am (EST) Generating therapeutic antibodies is far more challenging than obtaining antibodies that merely recognize their targets. Engineering po...
    APR 21, 2021 10:00 AM PDT
    C.E. CREDITS
    APR 21, 2021 10:00 AM PDT
    Date: April 21, 2021 Time: 10:00am (PDT), 1:00pm (EDT) Serological testing for SARS-CoV-2 has been steadily adopted into clinical practice over the course of this pandemic. In this webinar,...
    JUN 09, 2021 7:00 AM PDT
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    C.E. CREDITS
    JUN 09, 2021 7:00 AM PDT
    Add to Calendar Select one of the following: iCal Google Calendar Outlook Calendar Yahoo Calendar
    Date: June 9, 2021 Time: 09 June 2021, 7am PDT, 10am EDT, 4pm CEST cells with dramatic implications on the validity of past cell culture related research. The fact that at least 509 cell lin...
    APR 20, 2021 11:00 AM PDT
    C.E. CREDITS
    APR 20, 2021 11:00 AM PDT
    Date: April 20, 2021 Time: 11:00am (PST), 2:00pm (EST) Identification and confirmation of microbial isolates is crucial in the analysis workflow, providing decision-makers the information...
    APR 08, 2021 11:00 AM PDT
    C.E. CREDITS
    APR 08, 2021 11:00 AM PDT
    Date: April 8, 2021 Time: 11:00am (PDT), 3:00pm (EDT) Pneumonia is a deadly condition with clinical outcomes highly dependent on prompt and appropriate therapy. Diagnosis of pneumonia is cha...
    NOV 09, 2017 10:30 AM PST

    The Need for Serum 25-hydroxyvitamin D Standardization in Clinical and Research Laboratories


    Specialty

    Research And Development

    Earth Science

    University

    Research

    Health

    Geography

    Asia100%

    Registration Source

    Website Visitors100%

    Job Title

    Medical Laboratory Technician100%

    Organization

    Manufacturer - Other100%


    Show Resources
    Loading Comments...
    Show Resources
    Attendees
    • See more