Medical Definition of Progesterone receptor test

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Progesterone receptor test: A lab test that is used to determine whether breast cancer cells have progesterone receptors. If the cells have progesterone receptors, they may depend on progesterone for growth and usually respond to hormone therapy. Breast cancer cells that do not have progesterone receptors do not need the hormone progesterone to grow and usually do not respond to hormone therapy.

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Reviewed on 12/11/2018

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