Definitions:

1. A blood test measurement that indicates the proportion of red blood cells in a given volume of blood. NOUN
   • The patient's packed cell volume was low, indicating possible anemia.
2. The percentage of blood volume occupied by red blood cells after the blood has been spun in a centrifuge. NOUN
   • A high packed cell volume can be a sign of dehydration or polycythemia.

Synonyms:

• hematocrit