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    Original site: www.cdc.gov/clinical-standardization-programs/php/thyroid/index.html | RestoredCDC.org is an independent project, not affiliated with CDC or any federal entity. Visit CDC.gov for free official information. Due to archival on January 6, 2025, recent outbreak data is unavailable. Videos are not restored. Access data.restoredcdc.org for restored data. Use of this site implies acceptance of this disclaimer.
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    About CSP Cardiovascular Disease Biomarker Standardization Programs Hormone Standardization Programs for Testosterone and Estradiol Vitamin D Standardization-Certification Program Thyroid Hormone Standardization Parathyroid Hormone Standardization View All
April 24, 2024
  Thyroid Hormones Standardization
          At a glance
          CDC is improving the accuracy of thyroid hormone measurements performed in patient care and public health activities.
        Overview
          Thyroid Disease‎‎
              Thyroid dysfunction can lead to serious health problems but can often be restored when detected correctly. If left untreated thyroid disorders can lead to serious cardiovascular and neuromuscular problems.
        Physicians rely on thyroid function tests to detect, diagnose, and treat diseases caused by thyroid hormones.
        CDC is improving the accuracy of free thyroxine (fT4) and thyroid-stimulating hormone (TSH) tests.
        CDC uses a reference method for fT4 and provides serum materials to laboratories and test manufacturers to help assess measurement accuracy and reduce the variability of accuracy among laboratories.
        Please contact Standardization@cdc.gov with questions about the CDC Thyroid Hormone Standardization program.
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