Donating a unit of whole blood or double red cells (2-units) removes iron from your body. You need iron to make new red blood cells. Low levels of iron can cause anemia or make it worse. All blood donors should learn more about iron. 1  Everyone should eat a healthy diet.2  All blood donors should add foods rich in iron to their diet.ou need iron to make new red blood cells. Low levels of iron can cause anemia or make it worse. All blood donors should learn more about iron. 1  Everyone should eat a healthy diet. 2  All blood donors should add foods rich in iron to their diet.
What is the 'Average-Cost Method'. The average-cost method is a costing method by which the value of a pool of assets or expenses is assumed to be equal to the average cost of the assets or expenses in the pool. BREAKING DOWN 'Average-Cost Method'.
Average total cost is the total cost per unit of output incurred when a firm engages in short-run production. It can be found in two ways. Because average total cost is total cost per unit of output, it can be found by dividing total cost by the quantity of output.