'''Blood donation''' is the process of giving [[blood]] to be used for medical purposes, including [[blood transfusion]]s. Some blood donors are able to give donate blood [[platelet]]s by [[apheresis]]; the process is lengthier (around two hours per donation) and can be undertaken every four weeks, rather than three times a year for regular donation. | '''Blood donation''' is the process of giving [[blood]] to be used for medical purposes, including [[blood transfusion]]s. Some blood donors are able to give donate blood [[platelet]]s by [[apheresis]]; the process is lengthier (around two hours per donation) and can be undertaken every four weeks, rather than three times a year for regular donation. |