This document provides information about blood donation. It discusses the history of blood donation dating back to 1628. It defines blood donation as the process of collecting, testing, preparing, and storing blood from voluntary donors. The main components of donated blood that are collected are red blood cells, white blood cells, platelets, and plasma. Donating blood is important as it can save lives and meets the high demand for blood. The blood donation procedure involves screening donors, collecting about 450ml of blood through venipuncture, testing the blood, and storing the blood components in a fridge.