Dictionary of Cancer Terms
View in Spanish: Muestreo venoso
Venous sampling (VEE-nus)
A procedure in which a sample of blood is taken from a certain vein and checked for specific substances released by nearby organs and tissues. A higher than normal amount of a substance can be a sign of disease in the organ or tissue that makes it.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.