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PTH Testing in Chronic Kidney Disease Patients

Sponsored by: DiaSorin, DiaSorin
Speaker
  • Professor of Internal Medicine, Director of the Division of Nephrology, Saint Louis University School of Medicine
    Biography
      Dr. Martin is Director of the Division of Nephrology at Saint Louis University and Professor of Internal Medicine. He has served as Chairman of the General Medicine B Study Section of the National Institutes of Health. Dr. Martin's clinical research interests include parathyroid hormone, Vitamin D metabolism and secondary hyperthyroidism. He has authored 230 publications in professional journals, including The New England Journal of Medicine, Kidney International, and The American Journal of Kidney Diseases and Clinical Journal of the American Society of Nephrology.

    Abstract

    Parathyroid hormone testing is important to monitor the progress of chronic kidney disease (CKD) patients. This presentation will review the basic biochemistry that regulates the calcium, which will explain the importance of PTH and 1,25 dihydroxyvitamin D. After defining the various stages of CKD, the focus will be on monitoring of patients that have progressed toward end stage renal disease (ESRD). It is critical to monitor these patients’ PTH to follow whether therapy is working. The discussion will then turn to advantages of using 1-84 PTH versus intact levels to monitor CKD patients.

    Learning Objectives

    • Define chronic kidney disease and the various stages. At what point along CKD progression are CKD subjects treated and how do PTH levels impact the attending physicians decision making process.
    • Understand Parathyroid Hormone's role in chronic kidney patients. Review the basic biochemistry and break it down to the point that we can understand what a nephrologist looks at in the progression and management of CKD.
    • Understand the difference between intact and 1-84 PTH tests. Discuss why measuring 1-84 vs iPTH is clinically significant - less misdiagnosis and less over treatment
      • more stability allows for more forgiving sample handling 
      • ex vivo oxidation does not impact the 1-84 where it is misinterpreted as instability by iPTH

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