Genetic testing

Definition of genetic testing
National Cancer Institute

genetic testing

(jeh-NEH-tik TES-ting)
The process of analyzing cells or tissue to look for changes in genes, chromosomes, or proteins that may be a sign of a disease or condition, such as cancer. These changes may also be a sign that a person has an increased risk of developing a specific disease or condition. Genetic testing may be done on tumor tissue to help diagnose cancer, plan treatment, or find out how well treatment is working.

Source: NCI Dictionary of Cancer Terms