NCI Dictionary of Genetics Terms

The NCI Dictionary of Genetics Terms contains technical definitions for more than 200 terms related to genetics. These definitions were developed by the PDQ® Cancer Genetics Editorial Board to support the evidence-based, peer-reviewed PDQ cancer genetics information summaries.

positive predictive value
(PAH-zih-tiv preh-DIK-tiv VAL-yoo)
The likelihood that an individual with a positive test result truly has the particular gene and/or disease in question. Also called PPV.