NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,032 terms related to cancer and medicine.

The amount of whole blood that is made up of red blood cells. It depends on the number and size of red blood cells. A hematocrit test is usually part of a complete blood count (CBC). It may be used to check for conditions such as anemia, dehydration, malnutrition, and leukemia. Also called HCT.