PCV (Packed Cell Volume / Hematocrit)

Category: science

The percentage of total blood volume occupied by red blood cells, measured via microcentrifugation.

PCV is the fastest tool for tracking anemia or hydration status. A tiny glass capillary tube filled with blood is spun down at high speed; a low PCV (below twenty-five percent) points to blood loss or red blood cell destruction, while a high PCV indicates systemic dehydration.

Common Examples

• The emergency team checked the trauma patient's PCV, noting a low value that flagged immediate hidden abdominal hemorrhage.
• A quick PCV spin takes under five minutes on the lab bench, making it an invaluable step during rapid emergency triage loops.