Definitions:

1. Refers to a blood product consisting mostly of red blood cells that have been separated from whole blood and concentrated for medical use. NOUN
   • The patient received two units of packed cells to treat severe anemia.
2. The red blood cell portion of blood, prepared by removing most of the plasma and sometimes the white cells and platelets, used in blood transfusions, especially to treat anemia or blood loss. NOUN
   • Packed cells are matched for blood type before transfusions to avoid reactions.

Synonyms:

• prbcs
• red blood cell concentrates
• red cells