![]() ![]() So the percentage of hematocrit is more accurate in the microhematocrit method than in the macrohematocrit method. The microhematocrit method traps less plasma because the diameter of the capillary tube is smaller than the Wintrobe hematocrit tube. Ī newer method is the microhematocrit method, which uses a capillary tube instead of a narrow glass tube and requires a smaller quantity of blood and less time. The macrohematocrit method carries the risk of measuring trapped plasma as part of the red blood cell layer, which erroneously elevates the hematocrit percentage. At the very top, there’s a small layer of blood plasma. The centrifuge separates the blood into three main layers: red blood cells, white blood cells, and platelets, in that order from the bottom up. It uses a narrow glass tube and a centrifuge machine. The original method for hematocrit measurement is the macrohematocrit (Wintrobe hematocrit tube) method. If your doctor suspects that you have a blood disorder such as anemia or polycythemia (too many red blood cells), your doctor may order a hematocrit test to check your red blood cells. Hematocrit is a significant measurement as it can identify whether you have sufficient red blood cells for oxygen transportation and delivery. On their way back to your lungs, they carry carbon dioxide to be exhaled. ![]() When red blood cells pass through your lungs, they bind to and transport oxygen to various cells in your body. They contain a vital protein component called hemoglobin that binds to oxygen, which fuels all the cells in your body. Hematocrit is important because red blood cells are essential to your survival. In a hematocrit test, the red blood cells are separated from the rest of your blood cells and plasma. The word hematocrit means to separate blood. Human blood contains red blood cells, white blood cells, and platelets suspended in a liquid called plasma. Hematocrit is also called packed cell volume (PCV) or erythrocyte volume fraction. ![]() Hematocrit (HCT) is the calculated volume percentage of red blood cells (erythrocytes) in your blood.
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