When you donate whole blood, typically about 500 ml (one pint) of blood is taken. This amount represents roughly 8% to 12% of the average adult's blood volume , which is around 4.5 to 5 liters in total. The donation process usually takes about 5 to 10 minutes for the blood draw itself, and the body replaces the lost plasma within a few days, while red blood cells take several weeks to fully regenerate. Different types of donations like platelet or plasma donations may involve different amounts and processes, but a standard whole blood donation is about 500 ml.
