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NCI Dictionary of Cancer Terms

negative test result  listen  (NEH-guh-tiv ... reh-ZULT)

  A test result that shows that a person does not have the disease, condition, or biomarker for which the test is being done. A negative test result usually means that the test result is normal, but it does not mean that a person will never get the disease or condition. More testing may be needed to make sure a negative test result is correct.