What is a hematocrit test?A hematocrit test is a type of blood test. Your blood is made up of red blood cells, white blood cells, and platelets. These cells and platelets are suspended in a liquid called plasma. A hematocrit test measures how much of your blood is made up of red blood cells. Red blood cells contain a protein called hemoglobin that carries oxygen from your lungs to the rest of your body. Hematocrit levels that are too high or too low can indicate a blood disorder, dehydration, or other medical conditions.Other names: HCT, packed cell volume, PCV, Crit; Packed Cell Volume, PCV; H and H (Hemoglobin and Hematocrit)
