NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,936 terms related to cancer and medicine.

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molecular test
(muh-LEH-kyoo-ler …)
In medicine, a laboratory test that checks for certain genes, proteins, or other molecules in a sample of tissue, blood, or other body fluid. Molecular tests also check for certain changes in a gene or chromosome that may cause or affect the chance of developing a specific disease or disorder, such as cancer. A molecular test may be done with other procedures, such as biopsies, to help diagnose some types of cancer. It may also be used to help plan treatment, find out how well treatment is working, or make a prognosis.