Today, most transfusions are not of whole blood but of one of its primary components: (1) red cells; (2) white cells; (3) platelets; (4) plasma (serum), the fluid part.
Mūsdienās lielākoties pārlej nevis pilnasinis, bet kādu no galvenajiem asins komponentiem: 1) eritrocītus, 2) leikocītus, 3) trombocītus, 4) plazmu (serumu) jeb šķidro daļu.