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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



specificity  listen  (SPEH-sih-FIH-sih-tee)

  When referring to a medical test, specificity refers to the percentage of people who test negative for a specific disease among a group of people who do not have the disease. No test is 100% specific because some people who do not have the disease will test positive for it (false positive).