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Platelets collected by using apheresis at an American Red Cross donation center. Not all platelet transfusions use platelets collected by automated apheresis. The platelets can also be separated from donations of whole blood collected in a traditional blood donation, but there are several advantages to separating the platelets at the time of collection.
They keep for up to five to seven days. [1] Platelet transfusions came into medical use in the 1950s and 1960s. [1] [5] It is on the World Health Organization's List of Essential Medicines. [6] [7] Some versions of platelets have had the white blood cells partially removed or been gamma irradiated which have specific benefits for certain ...
During a platelet donation, the blood is drawn from the patient and the platelets are separated from the other blood components. The remainder of the blood, red blood cells, plasma, and white blood cells are returned to the patient. This process is completed several times for a period of up to two hours to collect a single donation. [78]
These differences do not affect how the platelets work. However, if a baby inherits a protein that is found on the father's platelets but is absent from the mother's platelets, the mother may respond to this foreign protein by developing an antibody that fights against it.
Understand the different processes before you decide to give.
People who do not use a drug that may prevent blood donation, who do not have the risk of the carrier of a disease, and who have suitable vascular structure may be apheresis donors. For apheresis platelet donation the donor's pre platelet count should be above 150 x 10^9/L.
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]
Early transfusions used whole blood, but modern medical practice commonly uses only components of the blood, such as red blood cells, plasma, platelets, and other clotting factors. White blood cells are transfused only in very rare circumstances, since granulocyte transfusion has limited applications.