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Platelet count (Plt) A few values are for inside red blood cells only: ... ESR increases with age and tends to be higher in females. [155] Female (Age+10)÷2 [154]
The platelet count can be reported in units of cells per microlitre of blood (/μL), [165] 10 3 cells per microlitre (× 10 3 /μL), or 10 9 cells per litre (× 10 9 /L). [4] The mean platelet volume (MPV) measures the average size of platelets in femtolitres.
Mean platelet volume (MPV) is a machine-calculated measurement of the average size of platelets found in blood and is typically included in blood tests as part of the CBC. Since the average platelet size is larger when the body is producing increased numbers of platelets, the MPV test results can be used to make inferences about platelet ...
Platelet concentration in the blood (i.e. platelet count), can be measured manually using a hemocytometer, or by placing blood in an automated platelet analyzer using particle counting, such as a Coulter counter or optical methods. [47] Most common blood testing methods include platelet count in their measurements, usually reported as PLT. [48]
In a typical set of rules, a platelet donor must weigh at least 50 kg (110 lb) and have a platelet count of at least 150 x 10 9 /L (150,000 platelets per mm³). [2] One unit has greater than 3×10 11 platelets. Therefore, it takes 2 liters of blood having a platelet count of 150,000/mm³ to produce one unit of platelets.
A normal human platelet count ranges from 150,000 to 450,000 platelets/microliter (μL) of blood. [4] Values outside this range do not necessarily indicate disease. One common definition of thrombocytopenia requiring emergency treatment is a platelet count below 50,000/μL. [5]
Platelet count measurement (both) and exclusion of underlying conditions (primary) ... The median age is reported to be between 4 and 8.1 years. ... with an average ...
Mean corpuscular hemoglobin (MCH) is the average amount of hemoglobin (Hb) per red blood cell and is calculated by dividing the hemoglobin by the red blood cell count. [citation needed] = Normal range: 27-31 pg/cell