Hematocrit levels that are too high or too low can indicate a blood disorder, dehydration, or other medical conditions. An abnormally low hematocrit may suggest anemia, a decrease in the total amount of red blood cells, while an abnormally high hematocrit is called polycythemia. Both are potentially life-threatening disorders. Haematocrit centrifuges are used to measure the volume percentage of red blood cells in whole blood. http://www.laboratory-centrifuge.com/hematocrit-centrifuge/