The hematocrit (/hɪˈmætəkrɪt/) (Ht or HCT), also known by several other names, is the volume percentage (vol%) of red blood cells (RBCs) in blood,[1][2] measured as part of a blood test.[3] The measurement depends on the number and size of red blood cells.[3] It is normally 40.7–50.3% for males and 36.1–44.3% for females.[3] It is a part of a person's complete blood count results,[4] along with hemoglobin concentration, white blood cell count and platelet count.
Because the purpose of red blood cells is to transfer oxygen from the lungs to body tissues, a blood sample's hematocrit—the red blood cell volume percentage—can become a point of reference of its capability of delivering oxygen. Hematocrit levels that are too high or too low can indicate a blood disorder, dehydration, or other medical conditions.[4] 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.[5] Both are potentially life-threatening disorders.
^Mondal H, Lotfollahzadeh S (2024). "Hematocrit". StatPearls. Treasure Island (FL): StatPearls Publishing. PMID 31194416. Retrieved 2024-04-23.
^"Hematocrit Test: What It Is, Levels, High & Low Range". Cleveland Clinic. Retrieved 2024-04-23.
^ abc"Hematocrit". MedlinePlus Medical Encyclopedia. U.S. National Library of Medicine. Archived from the original on 2020-09-28. Retrieved 2020-02-05.
^ ab"Hematocrit Test". MedlinePlus. U.S. National Library of Medicine. Archived from the original on 6 May 2019. Retrieved 6 May 2019.
^"Non-Invasive Detection of Hematocrit". BME 240. Univeristy of California, Irvine -. Archived from the original on 2015-02-15. Retrieved 2015-02-13.
The hematocrit (/hɪˈmætəkrɪt/) (Ht or HCT), also known by several other names, is the volume percentage (vol%) of red blood cells (RBCs) in blood, measured...
red blood cells and platelets, the concentration of hemoglobin, and the hematocrit (the volume percentage of red blood cells). The red blood cell indices...
Polycythemia (also known as polycythaemia) is a laboratory finding in which the hematocrit (the volume percentage of red blood cells in the blood) and/or hemoglobin...
multiplying a volume of blood by the proportion of blood that is cellular (the hematocrit), and dividing that product by the number of erythrocytes (red blood cells)...
{\displaystyle CorrectedReticPercentage=ReticPercentage*{Hematocrit \over NormalHematocrit}} This calculation is to correct for the severity of the anemia...
calculated given the hematocrit (HC; the fraction of blood that is red blood cells) and plasma volume (PV), with the hematocrit being regulated via the...
development and promotes muscle and facial hair development. Women have lower hematocrit (the volume percentage of red blood cells in blood) than men; this is...
the hemoglobin / hematocrit level, and reducing the risk of blood clots. Phlebotomy is typically performed to bring their hematocrit (red blood cell percentage)...
cells in kidneys of mice by in situ hybridization: correlation with hematocrit, renal erythropoietin mRNA, and serum erythropoietin concentration". Blood...
red blood cells present in your vessels has an effect on your health. Hematocrit tests can be performed to calculate the proportion of red blood cells...
pressure of O2, a person with a high hematocrit carries more oxygen per liter of blood than a person with a lower hematocrit does. High altitude dwellers therefore...
(RBF) can be calculated from a patient's renal plasma flow (RPF) and hematocrit (Hct) using the following equation: R B F = R P F 1 − H c t {\displaystyle...
investigators tried to find a reason for Pantani's high hematocrit values, including an hematocrit value of 57.6% recorded on 1 May 1995, at a hospital after...
in IV therapy, "IVs can be used to change blood test results (such as hematocrit where EPO or blood doping is being used), mask urine test results (by...
average volume of a red blood cell and is calculated by dividing the hematocrit (Hct) by the concentration of red blood cell count.[citation needed] MCV...
are small, "macrocytic" if they are large, and "normocytic" otherwise. Hematocrit, the proportion of blood volume occupied by red blood cells, is typically...
between 120 and 180 minutes after drinking the solution an increase in hematocrit of more than 3 percent at 30 minutes a rise in pulse rate of more than...
also called erythrocytes). The increase in RBCs leads to an increased hematocrit in the blood, and a subsequent increase in hemoglobin that increases the...
the blood, is able to stimulate red blood cell production and increase hematocrit. This substance was purified and confirmed as erythropoietin. In 1977...
packed red blood cell. It is calculated by dividing the hemoglobin by the hematocrit. Reference ranges for blood tests are 32 to 36 g/dL (320 to 360g/L), or...
cavity by analysing a sample of the fluid, and are defined as having a hematocrit of greater than 50% that of the person's blood. Hemothoraces may be treated...
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