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Dictionary of Cancer Terms

View in Spanish: Prueba sérica de marcadores tumorales

Serum tumor marker test (SEER-um TOO-mer MAR-ker )
A blood test that measures the amount of substances called tumor markers (or biomarkers). Tumor markers are released into the blood by tumor cells or by other cells in response to tumor cells. A high level of a tumor marker may be a sign of cancer.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.