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Hormone Standardization Program

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CDC Hormone and Vitamin D Standardization Programs improve the diagnosis of polycystic ovary syndrome, certain cancers, and other diseases of hormone excess and deficiency. The program assists in providing more accurate and precise hormone measurements used in patient care and research, specifically testosterone, 25-hydroxyvitamin D, and estradiol.

The Clinical Chemistry Branch, Division of Laboratory Sciences conducts this voluntary program. The program is nonregulatory, and it helps clinical, research, and public health laboratories maintain and enhance the quality and comparability of measurement results obtained from steroid hormone and vitamin D tests.

Better laboratory data will

  • Assure consistency in patient care and public health efforts
  • Enable the use of general reference ranges to identify individuals or population subgroups with unsafe levels
  • Minimize retesting of patients referred to another doctor
  • Optimize the use of research findings by enabling pooling of data from different research studies
  • Improve patient care through faster transfer of research findings to patient care and public health

The program provides services to laboratories, to manufacturers of diagnostic products, and to organizations involved in proficiency testing/external quality assessment schemes. Below are some of the services the hormone standardization program provides:

This program is endorsed by 14 professional and medical organizations.

If you are interested in participating in this program, please click the links above to see an overview of each aspect of CDC's Hormone and Vitamin D Standardization Programs.

Contact Us:
  • Centers for Disease Control and Prevention
    1600 Clifton Rd
    Atlanta, GA
    30329-4027 USA
  • 800-CDC-INFO
    TTY: (888) 232-6348
  • Contact CDC–INFO The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Road Atlanta, GA 30329-4027, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO
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