Question

What are the precautions to be observed and taken during blood donation

Answer 1

the donor must me healthy and disease free
and also how much blood does.the donor have in his body

Answer 2

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To minimize the chance of an adverse reaction during a transfusion, health care practitioners take several precautions. Before starting the transfusion, usually a few hours or even a few days beforehand, the person is cross-matched with the donor blood (not done for transfusions of plasma or platelets).