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'.
The main difference between weighted average cost accounting, LIFO, and FIFO methods of accounting is the difference in which each method calculates inventory and cost of goods sold. The weighted average cost method uses the average of the costs of the goods to assign costs.