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Hemoglobin. The mean corpuscular hemoglobin concentration (MCHC) is a measure of the concentration of hemoglobin in a given volume of 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), [1] or between 4.81 and 5.58 mmol/L.
Mean corpuscular hemoglobin concentration (MCHC) is the average concentration of hemoglobin per unit volume of red blood cells and is calculated by dividing the hemoglobin by the hematocrit. [citation needed] = Normal range: 32-36 g/dL
g/L Hemoglobin subunits (sometimes displayed simply as "Hemoglobin") Male: 8.0, [139] 8.4 [139] 10.0, [139] 10.8 [139] mmol/L: 4 per hemoglobin molecule Female: 7.2, [139] 7.6 [139] 9.2, [139] 10.0 [139] Hemoglobin in plasma: 0.16 [14] 0.62 [14] μmol/L: Normally diminutive compared with inside red blood cells 1: 4: mg/dL Glycated hemoglobin ...
Hemoglobin G, Hemoglobin G-Philadelphia, or hbG, is a mutation of the cells that oxygenate blood. The G-Philadelphia variant is most commonly found in African Americans, with carriers being every 1 in 5,000. [1] The trait is normal-functioning and has no known negative effects. [2]
The subunits are structurally similar and about the same size. Each subunit has a molecular weight of about 16,000 daltons, [51] for a total molecular weight of the tetramer of about 64,000 daltons (64,458 g/mol). [52] Thus, 1 g/dL=0.1551 mmol/L. Hemoglobin A is the most intensively studied of the hemoglobin molecules. [citation needed]
In adults, one unit brings up hemoglobin levels by about 10 g/L (1 g/dL). [3] [4] Repeated transfusions may be required in people receiving cancer chemotherapy or who have haemoglobin disorders. Cross-matching may be required before the blood is given. [1] A red blood cell concentrate is given by injection into a vein. [5]
Assuming that the red blood cells are normal, there is a constant relationship between hemoglobin and hematocrit: the hematocrit percentage is approximately three times greater than the hemoglobin value in g/dL, plus or minus three. This relationship, called the rule of three, can be used to confirm that CBC results are correct. [113]
An estimated hematocrit as a percentage may be derived by tripling the hemoglobin concentration in g/dL and dropping the units. [11] The packed cell volume (PCV) can be determined by centrifuging EDTA-treated or heparinized blood in a capillary tube (also known as a microhematocrit tube) at 10,000 RPM for five minutes. [12]