Hct can also become elevated with lung disease, congenital cardiac disease, low blood oxygen levels or polycythemia (excessive production of red blood cells). Anemia is defined as a hemoglobin level of less than the 5th percentile for age. High Hct typically presents with high red blood cells and hemoglobin levels, which are also a sign of dehydration. High Hct levels usually occur as a result of decreased amounts of water in the blood. Hct blood tests are not specific, meaning results are. Anemia during pregnancy is common, however it can be dangerous for both the mother and baby if not treated correctly. High hematocrit may be a sign of decreased fluid in the blood, which may indicate severe dehydration. Normal hematocrit values are different for men, women, and children.
Hematocrit levels should be interpreted alongside other results from a complete blood count. Women: between 35 and 45%, although pregnant women may be closer to 34 to 47%.Anemia and the degree of the anemia severity.Hematocrit reference ranges vary from lab to lab, but generally, normal hematocrit levels are:.Therefore, the hematocrit test is useful to diagnose: A low plasma volume, usually related to dehydration (diarrhea, burns, etc.).The proportion of each of these components should be within a certain range. Blood contains plasma (the liquid part that also contains hormones, nutrients, and electrolytes), red blood cells, platelets, and white blood cells.
A high production of RBCs, usually related to a disorder called polycythemia vera. What Is Hematocrit Hematocrit is a measure of the proportion of blood that is composed of red blood cells.Aplastic anemia: Where the bone marrow cannot create enough blood cells.Īs you can see, there are many types of anemia and only studying the hematocrit is not possible to know the type of anemia that you be suffering but it gives information about the degree of the anemia, if it is mild, moderate or severe.Ī higher than normal hematocrit may indicate:.Megaloblastic anemia: The cause is a lack of vitamin B12 or folic acid.The destruction of red blood cells is called hemolysis. Sudeep Putta Manohar Bangalore Asked for Male, 28 Years 190 Dr. Hemolytic anemia: It is caused by a fast destruction of RBCs. Normal hematocrit levels Asked for Male, 28 Years 265 Dr.Iron deficiency anemia: It is the most common and it is due to an iron deficit.For automated procedures, the haematocrit is the product of the RBC. A low hematocrit percentage is usually due to a low amount of RBC in the blood or because RBCs are destroyed faster than they can be made. The HCT is a measurement of the volume of red blood cells as a percentage of whole blood. Therefore, decreased Hematocrit values are an indicator of anemia, a condition in which there is a reduction in the hemoglobin in the blood. The hematocrit test is performed along with other RBC studies such as RBC count, hemoglobin, MCV (Mean Corpuscular Volume), MCH (Mean Corpuscular Hemoglobin), MCHC (Mean Corpuscular Hemoglobin Concentration) and RDW (red cell distribution width) for a better diagnosis.Ī low percentage of hematocrit is usually seen at the same time that a low hemoglobin level. The hematocrit percentage is usually requested in a general blood test to give information about your health. It uses substances like EPO (Erythropoietin) to increase the hematocrit percentage in order to improve an athlete's performance. There is a doping procedure called blood doping. Both are usually simultaneously increased or decreased. Hemoglobin is an iron-based molecule type that carries oxygen to the cells of the body. There is a close link between hematocrit and hemoglobin. The hematocrit is determined indirectly from the number of RBCs (Red Blood Cell count) and the average size of RBCs (MCV) according to the following formula. If the number of RBC is below the normal range or the RBC are small in size (volume) there will be a low level of hemoglobin in the blood and the hematocrit will be below the normal percentage. Red blood cells (RBC), also called erythrocytes, give the blood its characteristic red color. The hematocrit is sometimes also called the packed cell volume (PCV). Hematocrit (HCT) is the volume of red cells expressed as a percentage of the volume of whole blood in the sample.
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