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Blood Donors

 A blood donation occurs when an individual voluntarily has blood drawn and used for transfusions and/or made into biopharmaceutical medications by a process called fractionation (separation of whole-blood components). Donation could also be of blood , or of specific components directly (the latter called apheresis). Blood banks often participate within the collection process also because the procedures those follow it.   Today within the developed world, most blood donors are unpaid volunteers who donate blood for a community supply. In some countries, established supplies are limited and donors usually give blood when family or friends need a transfusion (directed donation). Many donors donate as an act of charity, but in countries that allow paid donation some people are paid, and in some cases there are incentives aside from money like paid day off from work. People also can have blood drawn for his or her own future use (autologous donation). Donating is comparatively safe, but some donors have bruising where the needle is inserted or may feel faint. Potential donors are evaluated for love or money which may make their blood unsafe to use. The screening includes testing for diseases which will be transmitted by a transfusion , including HIV and hepatitis . The donor must also answer questions on medical record and take a brief physical examination to form sure the donation isn't hazardous to his or her health. How often a donor can donate varies from days to months supported what component they donate and therefore the laws of the country where the donation takes place. for instance , within the us , donors must wait eight weeks (56 days) between blood donations but only seven days between plateletpheresis donations and twice per seven-day period in plasmapheresis.

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